- Seouls Corners
- Seven Mile Narrows
- Severn Bridge
- Severn Falls
- Seville
- Shady Nook
- Shallow Lake
- Shands
- Shanes
- Shanick
- Shannon Hall
- Shannonville
- Sharbot Lake
- Sharon
- Shawanaga Landing
- Sheahan Estates
- Sheatown
- Shebeshekong
- Shedden
- Sheffield Glen
- Shelburne
- Sheldon's Corners
- Shenston
- Shep's Subdivision
- Sheppardton
- Sherwood
- Sherwood Springs
- Shetland
- Shields Crossing
- Shillington