The Ontario U-21 Curling Championships (until 2016 called the Ontario Junior Curling Championships) is an annual curling tournament. It is the provincial curling championship for curling teams aged 20 and under in Southern Ontario. The winning team represents Ontario at the Canadian Junior Curling Championships.
Until 1978, the event was known as the provincial schoolboy championship. Since 1979, there have been two separate events.
| Year | Skip | Club | |
|---|---|---|---|
| 1950 | Sault Ste. Marie Collegiate Institute | ||
| 1951 | Mike Cassels | Hamilton Westdale Collegiate | |
| 1952 | Jack Mosley | Lindsay Collegiate | |
| 1953 | Bob Walker | Oshawa Collegiate Institute | |
| 1954 | Bill Fraser | Sarnia Collegiate Institute | |
| 1955 | Bill Fraser | Sarnia Collegiate Institute | |
| 1956 | Bill Fraser | Sarnia Collegiate Institute | |
| 1957 | Ian Johnston | Kingston Collegiate and Vocational Institute | |
| 1958 | Welland High & Vocational | ||
| 1959 | Parry Sound Curling Club | ||
| 1960 | Kingston Collegiate and Vocational Institute | ||
| 1961 | Kitchener-Waterloo CVS | ||
| 1962 | Banting Memorial High School | ||
| 1963 | West Hill Secondary | ||
| 1964 | Owen Sound Collegiate | ||
| 1965 | Don Mills Collegiate | ||
| 1966 | Kingston Collegiate | ||
| 1967 | Uxbridge Secondary School | ||
| 1968 | Bill Hope | Trenton High School | |
| 1969 | Renfrew District Collegiate Institute | ||
| 1970 | J.F. Ross Collegiate and Vocational Institute | ||
| 1971 | Gananoque Secondary School | ||
| 1972 | Gananoque Secondary School | ||
| 1973 | Gananoque Secondary School | ||
| 1974 | Brampton Centennial Secondary | ||
| 1975 | London Westminster Secondary | ||
| 1976 | Victoria Park Secondary | ||
| 1977 | Uxbridge Secondary School | ||
| 1978 | Hanover John Diefenbaker Secondary | ||
| 1979 | Brant Curling Club | ||
| 1980 | St. George's Golf and Country Club | ||
| 1981 | Oakville Curling Club | ||
| 1982 | John Base | Mississaugua Golf & Country Club | |
| 1983 | Rockcliffe Curling Club | ||
| 1984 | Thornhill Country Club | ||
| 1985 | London Curling Club | ||
| 1986 | Tam Heather Curling Club | ||
| 1987 | Brampton Curling Club | ||
| 1988 | Morrisburg Curling Club | ||
| 1989 | Kingston Curling Club | ||
| 1990 | Noel Herron | Kingston Curling Club | |
| 1991 | Forest Curling Club | ||
| 1992 | Guelph Curling Club | ||
| 1993 | St. Catharines Golf and Country Club | ||
| 1994 | Bradford and District Curling Club | ||
| 1995 | Peterborough Curling Club | ||
| 1996 | Sutton Curling Club | ||
| 1997 | Ottawa Curling Club | ||
| 1998 | John Morris | Ottawa Curling Club | |
| 1999 | John Morris | Ottawa Curling Club | |
| 2000 | Burlington Curling Club | ||
| 2001 | High Park Club | ||
| 2002 | Blue Water Curling Club | ||
| 2003 | Sarnia Golf and Curling Club | ||
| 2004 | Granite Club | ||
| 2005 | Sarnia Golf and Curling Club | ||
| 2006 | Dixie Curling Club | ||
| 2007 | Brampton Curling Club | ||
| 2008 | St. Thomas Curling Club | ||
| 2009 | |||
| 2010 | Jake Walker | ||
| 2011 | |||
| 2012 | |||
| 2013 | |||
| 2014 | Rideau Curling Club | ||
| 2015 | Quinte Curling Club | ||
| 2016 | Navan Curling Club | ||
| 2017 | Westmount Golf and Country Club | ||
| 2018 | Westmount Golf and Country Club | ||
| 2019 | Samuel Steep | Galt Country Club | |
| 2020 | Owen Purdy | Cataraqui Golf & Country Club | |
| 2021 | Scott Mitchell | ||
| 2022 | Landan Rooney | Whitby Curling Club | |
| 2023 | Jayden King | RCMP Curling Club | |
| 2024 | Kibo Mulima | Guelph Curling Club |
| Year | Skip | Club | |
|---|---|---|---|
| 1972 | Ottawa Curling Club | ||
| 1973 | Humber Highland Curling Club | ||
| 1974 | Arnprior Curling Club | ||
| 1975 | Kingston Curling Club | ||
| 1976 | Kingston Curling Club | ||
| 1977 | St. George's Golf and Country Club | ||
| 1978 | Idylwylde Country Club | ||
| 1979 | Kingston Curling Club | ||
| 1980 | RA Curling Club | ||
| 1981 | St. George's Golf and Country Club | ||
| 1982 | Bayview Country Club | ||
| 1983 | Alison Goring | Bayview Country Club | |
| 1984 | Bayview Country Club | ||
| 1985 | Dixie Curling Club | ||
| 1986 | Hylands Curling Club | ||
| 1987 | Sarnia Golf and Curling Club | ||
| 1988 | Thessalon Curling Club | ||
| 1989 | London Curling Club | ||
| 1990 | Hawkesbury Curling Club | ||
| 1991 | Debbie Green | Unionville Curling Club | |
| 1992 | Heather Crockett | Unionville Curling Club | |
| 1993 | Kim Gellard | Unionville Curling Club | |
| 1994 | Dominique Lascelles | Hawkesbury Curling Club | |
| 1995 | Kirsten Harmark | Milton Curling Club | |
| 1996 | Denna Schell | Cannington Curling Club | |
| 1997 | Sara Garland | Unionville Curling Club | |
| 1998 | Jenn Hanna | Ottawa Curling Club | |
| 1999 | Julie Reddick | Milton Curling Club | |
| 2000 | Julie Reddick | Oakville Curling Club | |
| 2001 | Carrie Lindner | Bradford and District Curling Club | |
| 2002 | Julie Reddick | Oakville Curling Club | |
| 2003 | Stephanie Gray | Palmerston Curling Club | |
| 2004 | Kelly Cochrane | Peterborough Curling Club | |
| 2005 | Erin Morrissey | Rideau Curling Club | |
| 2006 | Lisa Farnell | Peterborough Curling Club | |
| 2007 | Hollie Nicol | KW Granite Club | |
| 2008 | Danielle Inglis | Burlington Curling Club | |
| 2009 | Ottawa Curling Club | ||
| 2010 | Rachel Homan | Ottawa Curling Club | |
| 2011 | KW Granite Club | ||
| 2012 | |||
| 2013 | |||
| 2014 | |||
| 2015 | Glendale Golf & Country Club | ||
| 2016 | Bayview Golf & Country Club | ||
| 2017 | |||
| 2018 | Emma Wallingford | Ottawa Curling Club | |
| 2019 | Thea Coburn | Dundas Valley Golf & Curling Club | |
| 2020 | Sierra Sutherland | Rideau Curling Club | |
| 2021 | Alyssa Blad | Dundas Valley Golf & Curling Club | |
| 2022 | Rideau Curling Club | ||
| 2023 | Tori Zemmelink | Navan Curling Club | |
| 2024 | Julia Markle | London Curling Club |