| OFSAA 2023 Girls Volleyball Participants |
| A | AA | AAAA |
| CISAA The York School | CISAA Holy Trinity School | CISAA Havergal College |
| CISAA St Clements School | COSSA St Mary Catholic Secondary School (Cobourg) | COSSA Bayside Secondary School |
| COSSA Quinte Christian High School | CWOSSA Glenview Park Secondary School | CWOSSA Cameron Heights Seocndary School |
| CWOSSA École secondaire Père Rene de Gallinée | EOSSAA Sydenham High School | EOSSAA Kingston Secondary School |
| EOSSAA École secondaire catholique Sainte-Marie-Rivier | EOSSAA Bishop Smith Catholic High School | GBSSA St Peter’s Catholic Secondary School |
| GBSSA École secondaire Le Caron | GBSSA Patrick Fogarty Catholic Secondary School | GHAC Oakville Trafalgar High School |
| GHAC École secondaire Académie catholique Mère-Teresa | GHAC Thomas A Blakelock High School | GHAC Bishop Tonnos Catholic Secondary School |
| LOSSA École secondaire catholique Saint-Charles Garnier | GHAC St Mary Catholic High School (Hamilton) | LOSSA Sinclair Secondary School |
| NCSSAA École secondaire publique Maurice–Lapointe | LOSSA Port Perry High School | LOSSA Brooklin High School |
| NEOAA École secondaire catholique Sainte-Marie | NCSSAA École secondaire catholique Béatrice Desloges | NCSSAA École secondaire catholique Franco-Cité |
| NOSSA École secondaire catholique L’Horizon | NEOAA O’Gorman High School | NCSSAA Glebe High School |
| NOSSA Elliot Lake Secondary School | NOSSA École secondaire catholique Champlain | NOSSA St Joseph Scollard Hall |
| NWOSSAA St. Thomas Aquinas High School | NWOSSAA St. Ignatius High School | ROPSSAA, St Aloysius Gonzaga Catholic Secondary School |
| ROPSSAA Brampton Christian Academy | ROPSSAA St Paul High School | SOSSA Westmount Secondary School |
| SOSSA Hamilton District Christian High School | SOSSA Sir Winston Churchill Secondary School (St Catharines) | SWOSSAA Chatham-Kent Secondary School |
| SWOSSAA École secondaire catholique E.J. Lajeunesse | SWOSSAA North Star High School | TDCAA Father Redmond Catholic Secondary School |
| TDCAA University of Toronto Schools | TDCAA Bishop Marrocco-Thomas Marton Catholic Secondary School | TDSSAA Lawrence Park Collegiate Institute |
| TDSSSAA Ursula Franklin Academy | TDSSAA Sir Oliver Mowat Collegiate Institute | WOSSAA Sir Frederick Banting Secondary School |
| WOSSAA Woodstock Collegiate Institute | WOSSAA Oakridge Secondary School | YRAA Thornlea Secondary School |
| YRAA École secondaire catholique Renaissance | YRAA Aurora High School | YRAA St Robert Catholic High School |
