S
- Sakitaw
- San Clara
- Sandridge
- Sandy Bay
- Sandy Bay 5
- Sandy Lake
- Sanford
- Sans Souci
- Sapotaweyak Cree Nation IR
- Sapotaweyak Cree Nation - Spruce Island Indian Reserve
- Sapton
- Saskatchewan
- Sawbill
- Scandinavia
- Sclater
- Scotts Hill
- Sebright
- Seech
- Seeseep Sakahikan
- Selkirk
- Senkiw
- Seven Sisters Falls
- Shamattawa 1
- Sharpewood
- Shelley
- Shellmouth
- Shell River
- Shell Valley
- Shergrove
- Sherridon
- Shilo
- Shoal Lake
- Shoal Lake Indian Reserve No. 37A
- Shoal Lake (Part) 40
- Shoal River 65B
- Shoal River 65F
- Shoal River Indian Reserve 65A
- Sidney
- Siegs Corner
- Sifton
- Sifton Junction
- Siglunes
- Silberfeld
- Silver Creek
- Silver Ridge
- Silverwood
- Sioux Valley
- Sioux Valley Dakota Nation
- Sirko
- Sisipuk Sakahegan (A) Indian Reserve
- Sisipuk Sakahegan (B) Indian Reserve
- Sisipuk Sakahegan (C) Indian Reserve
- Skelding
- Skownan
- Skylake
- Slave Falls
- Smith Hill
- Smiths
- Snowflake
- Snow Lake
- Somerset
- Somme
- Souris
- Souris-Glenwood
- South Beach
- South Cypress
- South Indian Lake
- South Junction
- South Norfolk
- Sperling
- Split Lake
- Split Lake 171
- Split Lake 171A
- Split Lake 171B
- Sprague
- Springfield
- Springhill
- Spring Well
- Spruce Bluff
- Spruce Sands
- Spruce Siding
- St. Adolphe
- St. Ambroise
- St. Andrews
- Stanley
- Starbuck
- St. Claude
- St. Clements
- Ste. Agathe
- Ste. Amélie
- Ste. Anne
- Steels Ferry
- Steep Rock
- Steep Rock Junction
- Ste-Geneviève
- Steinbach
- Stephenfield
- Ste. Rose
- Ste. Rose du Lac
- St. Eustache
- St. François Xavier
- Stitt
- St. Jean Baptiste
- St. John's
- St. Laurent
- St. Lazare
- St. Lupicin
- St. Malo
- Stockport
- Stonewall
- Stony Hill
- Stony Hill
- Stony Mountain
- St. Peters Fishing Station 1A
- St-Pierre-Jolys
- St. Pierre Sud
- Strathclair
- Strathcona
- Strathcona Park
- St. Raymond
- St. Theresa Point
- Stuartburn
- Suffren
- Sundance
- Sunnyside Beach
- Sunset Bay
- Sunset Beach
- Sunville
- Swan Lake
- Swan Lake 65C
- Swan Lake 7
- Swan Lake 7A
- Swan Lake First Nation 8A
- Swan River
- Sylvan
