| Official Name: | Moonstone |
| Settlement Type: | Unincorporated community |
| Pushpin Map: | Canada Ontario |
| Pushpin Mapsize: | 200 |
| Coordinates: | 44.6556°N -79.6636°W |
| Subdivision Type: | Country |
| Subdivision Type1: | Province |
| Subdivision Type2: | County |
| Subdivision Type3: | Township |
| Subdivision Name2: | Simcoe County |
| Subdivision Name3: | Oro-Medonte |
| Timezone: | Eastern (EST) |
| Utc Offset: | -5 |
| Timezone Dst: | EDT |
| Utc Offset Dst: | -4 |
| Postal Code Type: | Postal code FSA |
| Area Code: | 705 |
Moonstone is an unincorporated community in Oro-Medonte, a township in Simcoe County, Ontario, Canada. Moonstone is located 20 minutes north of Barrie and 15 minutes from Orillia. Moonstone is also accessible via Highway 400, and is a popular destination for skiers, snowboarders and winter enthusiasts visiting nearby Mount St. Louis Moonstone Ski Resort. The community has an elementary school and a community park which includes basketball courts, climbing structures, swings, and a football field. The community hosts a variety of annual events including a Santa Claus parade and an Easter egg hunt.