| S&K | Sonic & Knuckles 
| Others |
| SK | Saber Knights
| Others |
| SK | Sakura Kid
| Others |
| SK | Samir Kadumi
| Others |
| SK | Sampling Keyboard
| Others |
| SK | Sangguniang Kabataan
| Others |
| SK | Sara Kay
| Others |
| SK | Sari Kultur
| Others |
| SK | Saskatchewan
| State |
| SK | Savage Killer
| Others |
| SK | Sawyer+Kaylen
| Others |
| SK | Schnellade Kanone
| Others |
| SK | Schroet Kommando
| Others |
| SK | Schwere Klasse
| Others |
| SK | Scientific Knowledge
| Others |
| SK | Scrap Killer
| Others |
| SK | Script Kiddie
| Others |
| SK | Seborrheic Keratosis
| Others |
| SK | Second Kingdom
| Others |
| SK | Secret Key
| Others |
| SK | Self Keep
| Others |
| SK | Semi Knob
| Others |
| SK | Seng Kang
| Others |
| SK | Separate Keyboard
| Others |
| SK | Serial Killer
| Others |
| SK | Seto Kaiba
| Others |
| SK | Seven Knights
| Others |
| SK | Sex Kitten
| Others |
| SK | Shadow Knight
| Others |
| SK | Shinzu Kankyo
| Others |
| SK | Shirley Kaiser
| Others |
| SK | Shop Kept
| Others |
| SK | Short Kick
| Others |
| SK | Shovel Knight
| Others |
| SK | Shuddha Kannadiga
| Others |
| SK | Sigma Kappa
| Others |
| SK | Sigma Kappa (Sorority)
| Others |
| SK | Sikkim
| State |
| SK | Silent Key
| Others |
| SK | Silent Killer
| Others |
| SK | Silver Knight
| Others |
| SK | Sima Khezrlou
| Others |
| SK | Singer Kearfott
| Others |
| SK | Sir Knight
| Others |
| SK | Sith Knight
| Others |
| SK | Siti Khamsiah
| Others |
| SK | Skein = Hank
| Others |
| SK | Skeletal
| Others |
| SK | Skewness
| Others |
| SK | Sleater Kinney
| Others |
| SK | Slovak
| Others |
| SK | Slovak Republic
| Others |
| SK | Slovakia (Slovak Republic)
| Others |
| SK | Sniper King
| Others |
| SK | Software Kit
| Others |
| SK | Sonic Krab
| Others |
| SK | Soon Keong
| Others |
| SK | Soota Kraidoor (Royal Soccer club)
| Others |
| SK | Spatial Key
| Others |
| SK | Spawn Kill
| Others |
| SK | Specialized Knowledge
| Others |
| SK | Spiral Knights
| Others |
| SK | St. Louis Field Office
| Others |
| SK | Stanley And Kristie
| Others |
| SK | Stanley Kubrick
| Others |
| SK | Station Keeping
| Others |
| SK | Stephen King
| Others |
| SK | Steve and Kevin
| Others |
| SK | Still Kissing
| Others |
| SK | Stock Knowledge
| Others |
| SK | Stop Keying
| Others |
| SK | Stop Knudsen
| Others |
| SK | Storage Key
| Others |
| SK | Storage King
| Others |
| SK | Store Keeper
| Others |
| SK | StoreKeeper
| Others |
| SK | Storm Kestrel
| Others |
| SK | Street King
| Others |
| SK | Strengthened Key
| Others |
| SK | Studio Killers
| Others |
| SK | Stupid King
| Others |
| SK | Stupid Kludge
| Others |
| SK | Subcontract
| Others |
| SK | Suicide Kings
| Others |
| SK | Sunshine Kennels
| Others |
| SK | Super Kickass
| Others |
| SK | Super King
| Others |
| SK | Super Kingdom
| Others |
| SK | Super Kiosk
| Others |
| SK | Supreme Kai
| Others |
| SK | Surrogate Key
| Others |
| SK | Survival Kit
| Others |
| SK | Survival Knife
| Others |
| SK | Swag Kidz
| Others |
| SK | Swat Kats
| Others |
| SK | Swiss Knife
| Others |