D
- Dalewood Conservation Area
- Dan Patterson Conservation Area
- Deadman's Bay Provincial Park
- Deas Island Regional Park
- De la Republique Provincial Park
- Derby Reach Regional Park
- Dildo Run Provincial Park
- Dinosaur Provincial Park
- Dollar Lake Provincial Park
- Domaine écologique de Mont Radar
- Domaine du lac des Cèdres
- Domaine Maizerets
- Donald M. Gordon Chinguacousy Park
- Downsview Park
- Driftwood Canyon Provincial Park
- Driftwood Provincial Park
- Duck Mountain Provincial Park
- Duck Mountain Provincial Park
- Duck Mountain Provincial Park
- Duff Roblin Provincial Park
- Dundas Valley Conservation Area
- Dungeon Provincial Park
- Dunnet Regional Park
