- South Beach
- South Central LA
- South Indian Indica
- South Indian Sativa
- Southern Lights
- Sox
- Space Bomb
- Space Cake
- Space Candy
- Space Cookies
- Space Cowboy
- Space Cream
- Space Dawg
- Space Dust
- Space Face
- Space Gold
- Space Jam
- Space Jill
- Space Mints
- Space Monkey
- Space Monster
- Space Needle
- Space Poison
- Space Queen
- Space Race
- Space Rip
- Space Runtz
- Space Wrangler OG
- Spaceberry
- Spacewalk
- Spacewalker
- Spark OG
- Spec Ops
- Special Chem
- Special K
- Special Kush #1
- Special Occasion
- Special Sauce
- Spice
- Spicy Disco
- Spiked Mai Tai
- Spiked Punch
- Spirit In The Sky
- Spirit of '76
- SPK
- Split Vanilla
- Spoetnik #1
- Spring Solstice
- Sprinkles
- Spritzer
- Spruce
- Spumoni
- Sputnik
- Spyder Mon
- Squintz
- Squirr't
- Squirt
- SR-71
- Stairway to Heaven
- Stank Breath
- Stankasaurus
- Star 47
- Star 91
- Star Berry Indica
- Star Child
- Star Cookie
- Star Cookies
- Star Dust OG
- Star Killer
- Star Kush
- Star Master Kush
- Star Pebbles