STATE:ONT CORPS (419)
| Corps Name | Other Names | City | State | Country |
|---|---|---|---|---|
| 11th Field Regiment Royal Canadian Artillery | Guelph | Ont | Canada | |
| 157th Scouts | Toronto | Ont | Canada | |
| 18th Mosquito Squadron Air Cadets | Toronto | Ont | Canada | |
| 18th Toronto Scouts | Toronto | Ont | Canada | |
| 1st Squadron Air Cadets | Timmons | Ont | Canada | |
| 295th Air Cadets | Parry Sound | Ont | Canada | |
| 2nd Signals | Canada's Marching Ambassadors | Toronto | ONT | Canada |
| 31st Field Regiment Royal Canadian Engineers | Sarnia | Ont | Canada | |
| 33rd Regiment | Coburg | Ont | Canada | |
| 33th Squadron | Danforth | Ont | Canada | |
| 3rd Batalion | Province of Ontario | Ont | Canada | |
| 3th Field Reg. Royal Can. Art.Bytown Gunners | Ottawa | Ont | Canada | |
| 42nd Locating Battery | Brockville | Ont | Canada | |
| 44th Field Squadron | Guelph | Ont | Canada | |
| 48th Field Squadron Royal Canadian Engineers | Kitchener | Ont | Canada | |
| 56th Field Regiment | Brantford | Ont | Canada | |
| 5th Col. RCASC | Toronto | ONT | Canada | |
| 68th Scouts | Rexdale | Ont | Canada | |
| Air Cadets | Kitchener | Ont | Canada | |
| Ajax Sea Cadet Bugle Band | RCSCC Ajax | Guelph | ONT | Canada |
| Angels | Belafonte | ONT | Canada | |
| Annpusa Lions | Annpusa | Ont | Canada | |
| Aristocrates | Windsor | Ont | Canada | |
| Arnprior Knights | Arnprior | Ont | Canada | |
| Arnprior Lions | Arnprior Lions-Hi Risers | Arnprior | ONT | Canada |
| Aurora High School | Aurora | Ont | Canada | |
| Baladins | Ottawa | Ont | Canada | |
| Bandettes | Sault Ste. Marie | ONT | Canada | |
| Bandmasters | North Bay | Ont | Canada | |
| Bandmasters | Camp Borden | Ont | Canada | |
| Barrie RCSCC | Barrie | Ont | Canada | |
| Belles of St. John | Branford | ONT | Canada | |
| Belltones | Brantford | ONT | Canada | |
| Blue Angels | Toronto Township | Ont | Canada | |
| Blue Eagles | Port Credit | Ont | Canada | |
| Blue Jets | Kitchener | Ont | Canada | |
| Blue Notes | Pickering | Ont | Canada | |
| Blue Saints | Sudbury | ONT | Canada | |
| Bluewater Bridgemen | Sarnia | Ont | Canada | |
| Bluewater Buccaneers | Bluewater Lionaires | Sarnia | ONT | Canada |
| Bluewater Girls | Goderich | Ont | Canada | |
| Bluewater Lionaires | Sarnia | ONT | Canada | |
| Boy Scout Trumpet Band | Golden Lions, Royal Blues, Simcoe Optimists, Simcoe Alumni, United Alumni | Simcoe | Ont | Canada |
| Boys Brigade | Province of Ontario | Ont | Canada | |
| Bradford Lions | Bradford | Ont | Canada | |
| Brampton Senators | Brampton | ONT | Canada | |
| Branch | Keetin | Ont | Canada | |
| Brantford Girls | Brantford | ONT | Canada | |
| Brantford Sabres | Brantford | Ont | Canada | |
| Brockelles | Brockville | Ont | Canada | |
| Brockville Rifles | Brockville | Ont | Canada | |
| Burlington Commanders | Canadian Commanders | Burlington | ONT | Canada |
| Byron Optimists | London | Ont | Canada | |
| Bytown Gunners | Ottawa | ONT | Canada | |
| Cabbagetown Cadets | Cabbagetown | Ont | Canada | |
| Cadet Lancers | Etobicoke | ONT | Canada | |
| Cadets La Salle | Ottawa | ONT | Canada | |
| Cadets La Salle B | Ottawa | Ont | Canada | |
| Cadets of Dutch Boy | Kitchener | ONT | Canada | |
| Camp Borden RCASC | Camp Borden | Ont | Canada | |
| Camp Borden Town Council | Camp Borden | Ont | Canada | |
| Camp Ipperwash Army Cadets | Province of Ontario | Ont | Canada | |
| Canada's Marching Ambassadors | Toronto | ONT | Canada | |
| Canadaires | Niagara Falls | ONT | Canada | |
| Canadian Army Cadets | Ottawa | Ont | Canada | |
| Canadian Commanders | Toronto | ONT | Canada | |
| Canadian Knights | Golden Knights | Peterborough | ONT | Canada |
| Canadian Lancers | Toronto | Ont | Canada | |
| Canadiers | Province of Ontario | Ont | Canada | |
| Capital Ensemble | Orleans | Ont | Canada | |
| Capreol AL | Capreol | Ont | Canada | |
| Cardinal Cadets | Most Precious Blood Cadets | Scarborough | Ont | Canada |
| Cardinals | Most Precious Blood Cardinals; Cardinals of PB | Scarborough | Ont | Canada |
| Carleton HMCS | Ottawa | Ont | Canada | |
| Cavalcade | Brampton | ONT | Canada | |
| Centralia RCAF Senior | Centralia | Ont | Canada | |
| Centurions | Stouffville | Ont | Canada | |
| Challenger Girls | Province of Ontario | Ont | Canada | |
| Chatham Police Boys | Chatham | Ont | Canada | |
| Chessmen | Prescott | Ont | Canada | |
| Clarkson Lions | Clarkson | Ont | Canada | |
| Clarkson Lions | Mississauga | Ont | Canada | |
| Clinton RCAF Senior | Clinton | Ont | Canada | |
| Coachmen (ONT) | Keswick | ONT | Canada | |
| Cobourg AL | Coburg | Ont | Canada | |
| Columbus Boys | Toronto | Ont | Canada | |
| Columbus Cadets | Toronto | Ont | Canada | |
| Community Living Hamilton | Hamilton | ONT | Canada | |
| Compagnons | Embrun | Ont | Canada | |
| Companion Cadets | Ottawa | Ont | Canada | |
| Companions | Ottawa | Ont | Canada | |
| Conqueror | Hamilton | ONT | Canada | |
| Conqueror II | Hamilton | ONT | Canada | |
| Constellation | St. George de beauce | ONT | Canada | |
| Contemporary Youth Ensemble | Vanier | ONT | Canada | |
| Continentals | Richmond Hill | Ont | Canada | |
| Crossley Secondary School | Fonthill | Ont | Canada | |
| Danforth Crusaders | Danforth | Ont | Canada | |
| Danforth Tech | Danforth | Ont | Canada | |
| De La Salle Oakland Crusaders Alumni | DOCA | Toronto | ONT | Canada |
| De La Salle Oaklands | Toronto | ONT | Canada | |
| De La Salle Oaklands B | Toronto | Ont | Canada | |
| Debs | Oakville | Ont | Canada | |
| Denis Morris Majestics | St. Catharines | ONT | Canada | |
| Downsview AF | Province of Ontario | Ont | Canada | |
| Drum Corps Alumni Toronto (DCAT) Chorus | Toronto | Ont | Canada | |
| Dukes of York | York | Ont | Canada | |
| Durham Girls | Durham All Girls | Durham | ONT | Canada |
| Dutch Boy | Dutch Boy Cadets | Kitchener | ONT | Canada |
| Dutch Boy Pre-Cadets | Kitchener | Ont | Canada | |
| E. Scarborough Kingsmen | E. Scarborough | ONT | Canada | |
| East York Collegiates | East York | Ont | Canada | |
| Ecole Secondaire | Embrun | Ont | Canada | |
| Elgin Regiment | Elgin 27 Armoured Regiment, Royal Canadian Armoured Corps | St. Thomas | ONT | Canada |
| Elgin Regiment Senior | St. Thomas | Ont | Canada | |
| Emerald Cadets | Mississauga | Ont | Canada | |
| Emerald Knights (ONT) | Emerald Cadets | Mississauga | ONT | Canada |
| Empire Loyalists | Amherstview | ONT | Canada | |
| Engineers Senior | Kitchener | Ont | Canada | |
| Entertainers | Sarnia | Ont | Canada | |
| Etobicoke Crusaders | Out of the Blue | Etobicoke | ONT | Canada |
| Etobicoke Knights | Etobicoke | ONT | Canada | |
| Etobicoke Lancers | Etobicoke | Ont | Canada | |
| Explorers | Province of Ontario | Ont | Canada | |
| Falkland Sea Cadets | Province of Ontario | Ont | Canada | |
| Fantasy Park Frontiersmen | Province of Ontario | Ont | Canada | |
| Firefighters | Kitchener | Ont | Canada | |
| Firefighters | Hamilton | Ont | Canada | |
| Flashettes | Hamilton | Ont | Canada | |
| Flying Dutchmen Cadets | Kitchener | Ont | Canada | |
| Flying Dutchmen Senior | Waterloo | Ont | Canada | |
| Forest High School Girls | Forest | Ont | Canada | |
| Frontiersmen Senior | Port Credit | Ont | Canada | |
| General Wingate AL | Toronto | Ont | Canada | |
| Georgian Lancers | Owen Sound | ONT | Canada | |
| Georgian Police | Pefferlaw | Ont | Canada | |
| Goderich Girls | Goderich | Ont | Canada | |
| Golden Angels | Brantford | Ont | Canada | |
| Golden Eagles | Brantford | Ont | Canada | |
| Golden Hawks | Cornwall | Ont | Canada | |
| Golden Knights | Peterborough | Ont | Canada | |
| Golden Lions (ONT) | Simcoe | ONT | Canada | |
| Golden Monarchs | Toronto | ONT | Canada | |
| Golden Mornarchs | North Toronto | Ont | Canada | |
| Grantham | St. Catharines | ONT | Canada | |
| Green Giants Junior | Toronto | Ont | Canada | |
| Grenadier Cadets | Kingston | Ont | Canada | |
| Grenadier/Yardmen | Kingston | Ont | Canada | |
| Grenadiers Senior | Merriton | Ont | Canada | |
| Guardettes | Niagara Falls | Ont | Canada | |
| Guardsmen | Windsor | Ont | Canada | |
| Guardsmen Senior | Port Dalhousie | Ont | Canada | |
| Guelph Lions | Guelph | Ont | Canada | |
| Guelph Royalaires | North Star/Royalaires, 11th Firld Regiment Royal Canadian ArtilleryTrumpet Band | Guelph | ONT | Canada |
| Gunners | Ottawa | Ont | Canada | |
| H.Y.P.E. | HYPE; Hamilton Youth Performing Ensemble; merger Conqueror II and Ridge Raiders | Hamilton | ONT | Canada |
| Hamilton Knights | Hamilton | Ont | Canada | |
| Hamilton Optimists | Hamilton | Ont | Canada | |
| Hamilton Viscounts | Hamilton | ONT | Canada | |
| Hanover | Hanover District High School | Hanover | ONT | Canada |
| Hanover Girls | Hanover | Ont | Canada | |
| Her Majesty’s Renown | St. Catherine’s | Ont | Canada | |
| Hill Park Sea Cadets | Province of Ontario | Ont | Canada | |
| Hilltoppers | Leaside | Ont | Canada | |
| HMCS Carleton | Carleton Place | Ont | Canada | |
| HMCS Ontario | Province of Ontario | Ont | Canada | |
| HMCS Ontario Sea Cadets | Kingston | Ont | Canada | |
| Horse Guards Senior | Province of Ontario | Ont | Canada | |
| Huron Park High School | Province of Ontario | Ont | Canada | |
| Hussars | Port Dalhousie | Ont | Canada | |
| Hyliters | North York | Ont | Canada | |
| Hyliters | Toronto | ONT | Canada | |
| Imperial Knights | Sudbury | Ont | Canada | |
| Imperial Raiders | Leamington | Ont | Canada | |
| Imperials | London | Ont | Canada | |
| Intertownsmen Senior | Toronto | Ont | Canada | |
| Jolly Jesters | Toronto | ONT | Canada | |
| Jungle Kings | Leaside Lions | Leaside | ONT | Canada |
| Justabouts Senior | Sudbury | Ont | Canada | |
| K-W Brass Act | Kitchener | Ont | Canada | |
| Kawartha Kavaliers | Lindsay | ONT | Canada | |
| Kemenfelt | ONT | Canada | ||
| Kempenfeld Bay Boys | Barrie | Ont | Canada | |
| Kingston Grenadiers | Limestone City Grenadier Drum & Bugle Corps | Kingston | ONT | Canada |
| Kingston RCEME | Kingston | Ont | Canada | |
| Kinsmen | East Scarborough | ONT | Canada | |
| KinsmenEast | Scarborough | Ont | Canada | |
| Kitchner Flying Dutchmen | Kitchener | ONT | Canada | |
| Kiwanis Centennials | Kingston | Ont | Canada | |
| Kiwanis Kavalier Kadets | Kitchener | Ont | Canada | |
| Kiwanis Kavaliers | merged with Tampa Bay Thunder (2002) | Kitchener | ONT | Canada |
| Knights of Columbus B | Toronto | Ont | Canada | |
| Krescendos | Peterborough | ONT | Canada | |
| Lakeshore Brassmen | Port Dover | Ont | Canada | |
| Lambton Lions | Sarnia | ONT | Canada | |
| Lamplighter/Royal Brigade | Smith Falls | Ont | Canada | |
| Lampliters | Orange Young Brittons - Hackett O.Y.B. 120; O.Y.B. Lampliters | Smith Falls | ONT | Canada |
| Lancer Cadets | Toronto | Ont | Canada | |
| Leamington Townsmen | Leamington | ONT | Canada | |
| Leaside Lions | Jungle Kings | Leaside | Ont | Canada |
| Les Compagnons | Companions; Embrun | Ottawa | ONT | Canada |
| Les Hilltoppers | ONT | Canada | ||
| Limestone City Grenadiers | Limestone City | ONT | Canada | |
| Limestone City Grenadiers Senior | Kingston | Ont | Canada | |
| Lionettes | Marching Angels | Sarnia | Ont | Canada |
| Lionettes B | Sarnia | Ont | Canada | |
| Lions Buccaneers | Merriton | Ont | Canada | |
| Lions Of London | London | ONT | Canada | |
| London District Scouts | London | Ont | Canada | |
| London Imperials | London | ONT | Canada | |
| London Lancers | London | Ont | Canada | |
| London RCR Senior | London | Ont | Canada | |
| Lt. Paeden | Coburg | Ont | Canada | |
| Majestics | St. Catherine’s | Ont | Canada | |
| Marching Angels (Ont) | Sarnia | ONT | Canada | |
| Marching Angels B | Sarnia | Ont | Canada | |
| Marching Debs | Picton | Ont | Canada | |
| Marching Diplomats | Sarnia | ONT | Canada | |
| Marching Royals Girls | St. Thomas | Ont | Canada | |
| Marching Saints | Carleton Place | ONT | Canada | |
| McMaster Drumline | Hamilton | ONT | Canada | |
| McMaster Marching Band | Hamilton | ONT | Canada | |
| Merriton Grenadiers | Merriton | ONT | Canada | |
| Michael Power Knights | Toronto | ONT | Canada | |
| Midlanders | Merger Oakridge Optimists and Woodstock Imperials | London | ONT | Canada |
| Midtowners | Toronto | ONT | Canada | |
| Militaires Senior | Niagara | Ont | Canada | |
| Millbrook Cadets | Millbrook | Ont | Canada | |
| Mindemova Scouts | Mindemova | Ont | Canada | |
| Mississauga Explorers | Mississauga | Ont | Canada | |
| Misslemen | Brantford | Ont | Canada | |
| Mocha Shrine | London | Ont | Canada | |
| Monotones | Province of Ontario | Ont | Canada | |
| Montgomery Legion | Ottawa | Ont | Canada | |
| Morris High School | Hamilton | Ont | Canada | |
| Mount Dennis AL | Mount Dennis | Ont | Canada | |
| Musketeers | Peterborough | Ont | Canada | |
| Nautical Knights | London | Ont | Canada | |
| Navy League Cadets | Brantford | Ont | Canada | |
| Newmarket Optimists | Newmarket | Ont | Canada | |
| Niagara Memorial Militaires | Niagara Memorial Band | Niagara Falls | ONT | Canada |
| Niagara Memorial Militaires Alumni | Niagara Falls | ONT | Canada | |
| Niagara Regionnaires | St. Catharines | ONT | Canada | |
| Niagara Whitewater | Niagara Falls | Ont | Canada | |
| Nickel City | Sudbury | Ont | Canada | |
| Nickel City Sound | Sudbury | Ont | Canada | |
| North Bay RCAF | North Bay | Ont | Canada | |
| North York Cadets | North York | Ont | Canada | |
| Northern Dream | Essex County | Ont | Canada | |
| Northern Dream | Windsor | ONT | Canada | |
| Northern Dream | Sarnia | Ont | Canada | |
| Northern Lights | Parry Sound | Ont | Canada | |
| Northshore | Merger of Cardinals and Oakland Crusaders | Scarborough | ONT | Canada |
| Northstar/Royalaires | Guelph | Ont | Canada | |
| Northstars | merger Flying Dutchmen and Dutch Boy Cadets | Kitchener | ONT | Canada |
| Northwind | Northwind Rebels; Oshawa Rebels; Rebels | Oshawa | ONT | Canada |
| Northwind Rebels | Oshawa | Ont | Canada | |
| Oakland Crusaders | Merger of De La Salle and Etobicoke Crusaders | Etobicoke | ONT | Canada |
| Oakridge Optimists | London | Ont | Canada | |
| Ontario All-Stars | Toronto | Ont | Canada | |
| Ontario Hospital for Sick Children | Toronto | Ont | Canada | |
| Ontario Hospital for Sick Children | London | Ont | Canada | |
| Ontario Training School For Girls | Toronto | Ont | Canada | |
| Opti-Knight Cadets | Guelph | Ont | Canada | |
| Opti-Knight Mites | Guelph | Ont | Canada | |
| Opti-Lancers | Mississauga | Ont | Canada | |
| Optimist Bantam | Toronto | Ont | Canada | |
| Optimist Cadet Lancers | Toronto | Ont | Canada | |
| Optimist Cadets | Toronto | Ont | Canada | |
| Optimist Danforth | Danforth | Ont | Canada | |
| Optimist Knights | Opti-Knights | Guelph | ONT | Canada |
| Optimist Lancers | Etobicoke | ONT | Canada | |
| Optimists Alumni | Toronto | ONT | Canada | |
| Orange Young Britons Senior | Carleton Place | Ont | Canada | |
| Orange Young Britons Senior | Smith Falls | Ont | Canada | |
| Ottawa Optimists | Ottawa | Ont | Canada | |
| Ottawa Sea Cadets | Ottawa | Ont | Canada | |
| Out of the Blue | Newmarket | Ont | Canada | |
| OYB Lampliters | Smiths Falls | ONT | Canada | |
| P. Credit Ambassadors | Port Credit | ONT | Canada | |
| Parkdale Lions Girls | Parkdale | Ont | Canada | |
| Partridge Phoenix | Coburg | Ont | Canada | |
| Patrolettes | Patrolettes All Girl | Oakville | ONT | Canada |
| Patrolmen | Trafalgar | Ont | Canada | |
| Peterborough Kadets | Peterborough | Ont | Canada | |
| Peterborough Senior Scouts | Peterborough | Ont | Canada | |
| Peti Corps Junior | Toronto | Ont | Canada | |
| Phoenix (ONT) | Sarnia | ONT | Canada | |
| Pickering | ONT | Canada | ||
| Pickering Girls | Pickering | Ont | Canada | |
| Pirates | Sarnia | Ont | Canada | |
| Pirettes All-Girl | Rexdale | Ont | Canada | |
| Point Hope | Point Hope | Ont | Canada | |
| Port Colbourne | Port Colbourne | Ont | Canada | |
| Port Credit Saints | Port Credit | ONT | Canada | |
| Port Dalhousie Guardsmen | Port Dalhousie | ONT | Canada | |
| Preston Cadets | Preston | Ont | Canada | |
| Preston Scout House Alumni Band | Preston | ONT | Canada | |
| Prince Edward Regiment | Belleville | Ont | Canada | |
| Prince of Wales Senior | Kingston | Ont | Canada | |
| Princemen (ONT) | Scarborough | ONT | Canada | |
| Princess Louise Dragoon Guards | Province of Ontario | Ont | Canada | |
| Princess Patricia’s Light Infantry | Province of Ontario | Ont | Canada | |
| Princess Royal Girls Sea Rangers | Province of Ontario | Ont | Canada | |
| Proud Canadians | Belleville | Ont | Canada | |
| Queen’s Own Bugles | Toronto | Ont | Canada | |
| Quinte Sound | Toronto | Ont | Canada | |
| R.C. Aires | Brantford | Ont | Canada | |
| Rameses Shrine | Toronto | Ont | Canada | |
| RCAF Repair Depot Senior | Toronto | Ont | Canada | |
| RCAF Trenton | Toronto | Ont | Canada | |
| RCAF Trenton | Trenton | Ont | Canada | |
| RCSCC Ajax | Toronto | Ont | Canada | |
| RCSCC Temerairie | Province of Ontario | Ont | Canada | |
| Regionaires | Niagara Falls | Ont | Canada | |
| Reiley’s Bugle Band | Province of Ontario | Ont | Canada | |
| Renaissance | Ottawa | Ont | Canada | |
| Renowns | St. Catherine’s | Ont | Canada | |
| Revelliers | Carleton Place | Ont | Canada | |
| Richmond Hill Police | St. Catherine’s | Ont | Canada | |
| Ridge Raiders | Hamilton | ONT | Canada | |
| Ridgeway Senior | Ridgeway | Ont | Canada | |
| Rose City Guardsmen | Rose City Guardsmen | Windsor | ONT | Canada |
| Royal Blues | Simcoe | ONT | Canada | |
| Royal Canadian Cadets | Toronto | Ont | Canada | |
| Royal Canadian Engineers | Kingston | Ont | Canada | |
| Royal Canadian Ordinance | Province of Ontario | Ont | Canada | |
| Royal Canadian Regiment Senior | Toronto | Ont | Canada | |
| Royal Canadian Sea Cadets | Peterborough | Ont | Canada | |
| Royal Canadians | Province of Ontario | Ont | Canada | |
| Royal Hamilton Cadets | Hamilton | Ont | Canada | |
| Royal Hamilton Light Infantry | Hamilton | Ont | Canada | |
| Royal Knights | Guelph | Ont | Canada | |
| Royal Knights | Toronto | Ont | Canada | |
| Royal Princess | Toronto | Ont | Canada | |
| Royals | St. Thomas | Ont | Canada | |
| Saints | Port Credit | Ont | Canada | |
| Sarnia Girls | Sarnia | Ont | Canada | |
| Scarborough Firefighters | Fire Fighters | Scarborough | ONT | Canada |
| Scarborough Knights | Scarborough | Ont | Canada | |
| Scarlet Princes | Toronto | Ont | Canada | |
| Scout House | Preston | Ont | Canada | |
| Scout House Alumni | Galt | Ont | Canada | |
| Scout House B | Preston | Ont | Canada | |
| Scout House Bugle Band | Preston | ONT | Canada | |
| Seneca Cadets | Willowdale | Ont | Canada | |
| Seneca Knights | Willowdale | Ont | Canada | |
| Seneca Optimists | merger of Seneca Princemen and Toronto Optimists | Toronto | ONT | Canada |
| Seneca Princemen | Willowdale | Ont | Canada | |
| Seneca Princemen | Toronto | ONT | Canada | |
| Senoritas All-Girl | Toronto | Ont | Canada | |
| Sertomanaires | Sarnia | ONT | Canada | |
| Sertomanaires ‘B’ | Sarnia | Ont | Canada | |
| Simcoe Alumni | Simcoe | Ont | Canada | |
| Simcoe Optimists | Simcoe | Ont | Canada | |
| Sky Raiders | Toronto | Ont | Canada | |
| Snap! Minicorps | Ottowa | ONT | Canada | |
| South Greenville Collegiate Girls | Prescott | Ont | Canada | |
| Sparkies | Scarborough | Ont | Canada | |
| Spirit of ’69 | Arnprior | Ont | Canada | |
| Squires | Peterborough | Ont | Canada | |
| Squires of Ontario | Peterborough | ONT | Canada | |
| St. Andrew’s Cadets | Welland | Ont | Canada | |
| St. Andrews | St. Andrew's Cadets | Cambridge | ONT | Canada |
| St. Aylmer | Aylmer | Ont | Canada | |
| St. Catharine’s Cadets | St. Catharines | Ont | Canada | |
| St. Catharine’s Collegiates | St. Catharines | Ont | Canada | |
| St. Catharines Chessmen | merger Grantham and Denis Morris Majestics | St. Catharines | ONT | Canada |
| St. Catharines Saints | St. Catharines | Ont | Canada | |
| St. Catherine's Buccaneers | Merriton Lions Buccaneers | St. Catherines | ONT | Canada |
| St. John's | St. John's Girls | Brantford | ONT | Canada |
| St. John’s Co-ed | Brantford | Ont | Canada | |
| St. Margaret Heralds | Toronto | Ont | Canada | |
| St. Margarette | Province of Ontario | Ont | Canada | |
| St. Mary’s | Toronto | Ont | Canada | |
| St. Thomas Girls | St. Thomas | Ont | Canada | |
| Stamford Guards | Stamford | ONT | Canada | |
| Stamford Guards Senior | Niagara Falls | Ont | Canada | |
| Steel City Cadets | Hamilton | Ont | Canada | |
| Steel City Sound | Hamilton | Ont | Canada | |
| Stratford RCSCC | Stratford | Ont | Canada | |
| Styliner Girls | Peterborough | Ont | Canada | |
| Sudbury Imperial Knights | Sudbury | ONT | Canada | |
| Sudbury Mining & Technical School | Sudbury | Ont | Canada | |
| Telephone City Trumpets | Brantford | Ont | Canada | |
| Temeraires | Toronto | Ont | Canada | |
| The Diplomats | Windsor | ONT | Canada | |
| The Diplomats Drumline | Windsor | ONT | Canada | |
| Thingamorrah Grenadiers | Province of Ontario | Ont | Canada | |
| Thorold Black Knights | Thorold | ONT | Canada | |
| Thorold Lancers | Thorold | Ont | Canada | |
| Thorold Troubadors | Thorold | Ont | Canada | |
| Toronto All-Stars | Toronto | Ont | Canada | |
| Toronto Eagles Senior | Toronto | Ont | Canada | |
| Toronto Negro Trumpeters | Toronto | Ont | Canada | |
| Toronto Optimists | 18th Scout Troop; 157th Scout Troop Trumpet Band | Toronto | ONT | Canada |
| Toronto Optimists Cadets | Toronto | Ont | Canada | |
| Toronto Region Scouts | Toronto | Ont | Canada | |
| Toronto Signals | 2nd Signal | Toronto | ONT | Canada |
| Toronto Western Technical | Toronto | Ont | Canada | |
| Townsmen (ONT) | Leamington | ONT | Canada | |
| Trojans | Welland | Ont | Canada | |
| Troubadors Senior | Ottawa | Ont | Canada | |
| United Alumni Senior Corps | Simcoe | ONT | Canada | |
| Uplands AF | Province of Ontario | Ont | Canada | |
| Vanguard | Toronto | Ont | Canada | |
| Ventures | Kitchener | ONT | Canada | |
| Village-Aires | Bobcaygeon | Ont | Canada | |
| Viscounts Senior | Hamilton | Ont | Canada | |
| Warriors | Cayuga | Ont | Canada | |
| Welland Lancers | Welland | ONT | Canada | |
| Welland Trojans | Welland | ONT | Canada | |
| West Toronto Kingsmen | West Toronto | Ont | Canada | |
| Western Tech | Toronto | Ont | Canada | |
| White Knights Senior | Hamilton | Ont | Canada | |
| Woodstock Imperials | Woodstock | ONT | Canada | |
| York | Toronto | Ont | Canada | |
| York Firefighters | Toronto | Ont | Canada | |
| York Lions | North York | ONT | Canada |
