The 2015 Athletics Ontario (AO) Championship host clubs and sites have been announced and are available below:
| 2015 Athletics Ontario Championships | |||
| Date | Championship Event | Host Club | Venue, Location |
| February 7 | Indoor Combined Events Championships and Prep Meet | Flying Angels | Toronto Track & Field Centre |
| February 14-15 | Indoor Youth-Senior (+ON vs QC Midget Dual) | Guelph TFC | Toronto Track & Field Centre |
| March 7-8 | Indoor Bantam-Midget-Junior | York University TC | Toronto Track & Field Centre |
| May 10 | 10,000m JM,SM,SW Track Running | London Runner Distance Club | TD Stadium, London |
| May-June | 10km Road Walk | TBA | TBA |
| June (12-)13-14 | Outdoor Junior-Senior | University of Windsor A.C. | University of Windsor Stadium |
| June-July | Outdoor Combined Events | TBA | TBA |
| July 17-19 | Outdoor Bantam-Midget-Youth | Guelph TFC/Niagara Olympic | NOC Facility, St. Catharines |
| September | 20km Road Walk | TBA | TBA |
| November 15 | Cross Country | Etobicoke TFC | Centennial Park, Toronto |
| Note: The two major indoor meets will include selected relay events from the other age groups not included in the championship.AO will not be conducting an outdoor prep/standards/national qualifying meet in 2015 | |||