Minor Atom Champions
| YEAR | A | B | C |
| 1955-56 | WEXFORD NORM BEAL’S | ||
| 1956-57 | RATCLIFFE ROCKETS | ||
| 1957-58 | FOSTERS MOTORS | ||
| 1958-59 | F&H PLASTICS | ||
| 1959-60 | BROMPTON PETES | ||
| 1960-61 | CLIFFCREST JETS | ||
| 1961-62 | ACTIVE CARTAGE | ||
| 1962-63 | TED REEVE | ||
| 1963-64 | BERT ROBINSON | ||
| 1964-65 | TORONTO TOWNSHIP | ||
| 1965-66 | DORSET PARK | RICHARDSONS FOR SPORTS | |
| 1966-67 | TORONTO RED WINGS | FOREST HILL LIONS | |
| 1967-68 | CEDAR HILL COLTS | SHANAHAN FORD | |
| 1968-69 | TORONTO OLYMPICS | STUBBY’S HC | |
| 1969-70 | LAWRY’S FOODS | TILDEN TERRIERS | GEORGE BELL |
| 1970-71 | YORK CARTAGE | ROYAL YORK | CEDAR HILL |
| YEAR | AA | A | B |
| 1971-72 | DON VALLEY | YORK MILLS | ROYAL YORK |
| 1972-73 | TORONTO RED WINGS | ROYAL YORK | TED REEVE |
| 1973-74 | NO RECORD | NO RECORD | NO RECORD |
| 1974-75 | DORSET PARK | FAUSTINA | ALDERWOOD |
| 1975-76 | YOUNG NATS | AGINCOURT EAGLES | AGINCOURT LIONS |
| 1976-77 | NO RECORD | NO RECORD | NO RECORD |
| 1977-78 | YOUNG NATS | MISSISSAUGA REPS | NORTH TORONTO |
| YEAR | MAJOR | AA | A |
| 1978-79 | NO SERIES | YOUNG NATS | NORTH TORONTO |
| 1979-80 | NO SERIES | MISSISSAUGA REPS | MISSISSAUGA N-STARS |
| 1980-81 | NO SERIES | MARLBOROS | MISSISSAUGA TERRIERS |
| 1981-82 | NO SERIES | YOUNG NATS | MISSISSAUGA TERRIERS |
| 1982-83 | NO SERIES | NO SERIES | NO SERIES |
| 1983-84 | NO SERIES | NO SERIES | NO SERIES |
| 1984-85 | TORONTO RED WINGS | GOULDING PARK | THORNHILL ISLANDERS |
| 1985-86 | TORONTO RED WINGS | YORK TOROS | THORNHILL ISLANDERS |
| 1986-87 | MARLBOROS | GOULDING PARK | TED REEVE |
| 1987-88 | TORONTO RED WINGS | HILLCREST | GRANDRAVINE |
| 1988-89 | MARLBOROS | MISSISSAUGA N-STARS | ETOBICOKE CANUCKS |
| 1989-90 | TORONTO RED WINGS | MISSISSAUGA N-STARS | EAST ENDERS |
| 1990-91 | TORONTO RED WINGS | ETOBICOKE CANUCKS | EAST ENDERS |
| 1991-92 | TORONTO RED WINGS | MISSISSAUGA BRAVES | ROYALS |
| 1992-93 | TORONTO RED WINGS | MISSISSAUGA TERRIERS | WESTON HAWKS |
| 1993-94 | TORONTO RED WINGS | YORK TOROS | WESTON HAWKS |
| 1994-95 | NO RECORD | NO RECORD | NO RECORD |
| 1995-96 | MARLBOROS | GOULDING PARK | ISLANDERS |
| 1996-97 | MARLBOROS | ISLANDERS | ISLANDERS |
| 1997-98 | NO RECORD | NO RECORD | NO RECORD |
| 1998-99 | TORONTO RED WINGS | MISSISSAUGA TERRIERS | ISLANDERS |
| 1999-2000 | TORONTO RED WINGS | STREETSVILLE TIGERS | DOWNSVIEW BEAVERS |
| 2000-01 | MISSISSAUGA SENATORS | MISSISAUGA TERRIERS | WEST MALL |
| YEAR | AAA | AA | A |
| 2001-02 | TORONTO RED WINGS | MISSISAUGA JETS | VAUGHAN RANGERS |
| 2002-03 | MARLBOROS | MISISSAUGA TERRIERS | WESTON HAWKS |
| 2003-04 | MARLBOROS | NORTH TORONTO | VAUGHAN PANTHERS |
| 2004-05 | TORONTO RED WINGS | YORK TOROS | VAUGHAN RANGERS |
| 2005-06 | MARLBOROS | YOUNG BRUINS | TED REEVE |
| 2006-07 | NORTH YORK RANGERS | WEST MALL | NORTH YORK KNIGHTS |
| 2007-08 | MISSISSUAGA REPS | NORTH YORK KNIGHTS | DUFFIELD |
| 2008-09 | MARLBOROS | MISSISSAUGA BRAVES | AVALANCHE |
| 2009-10 | MISSISSAUGA REBELS | MISSISSAUGA BRAVES | VAUGHAN PANTHERS |
| 2010-11 | MARLBOROS | WEST HILL | YORK MILLS |
| 2011-12 | MISSISSAUGA REBELS | NORTH TORONTO | TORONTO EAGLES |
| 2012-13 | MARLBOROS | NORTH TORONTO | NORTH TORONTO |
| 2013-14 | TORONTO MARLBOROS | TED REEVE THUNDER | VAUGHAN RANGERS |
| 2014-15 | TORONTO YOUNG NATIONALS | VAUGHAN PANTHERS | VAUGHAN RANGERS |
| 2015-16 | VAUGHAN RANGERS | STREETSVILLE TIGERS | TORONTO JR. CANADIENS |
| 2016-17 | VAUGHAN RANGERS | TOROS | TORONTO JR. CANADIENS |
