- Saint Albert Street
- Saint Clair Court
- Sandpiper Lane
- Sandy Crescent
- Saratoga Road
- Saugeen Street
- Saugeen Valley Trail
- Scott Crescent
- Scott Street
- Scougall Court
- Shadywood Crescent
- Shakespeare Avenue
- Shevchenko Boulevard
- Sideroad 10
- Sideroad 15 North
- Sideroad 20
- Sideroad 25
- Sideroad 30
- Sideroad 30 South
- Sideroad 5 North
- Sideroad 5 South
- Skye Court
- Smith Lane
- Snobelen Trail
- Snowdon Lane
- South Street
- Southline Avenue
- Spark Lane
- Stewart Drive
- Stoney Island Crescent
- Stornoway
- Stratford Street
- Sunset Place
- Sutton Street