Sakari
Saltah'na
Samarian Coral Fish
Sand Bats
Sark, Klingon
Satarrans
Scalosians
Scathos
Sehlat
Selay
Seltan Carnosaur
Sheliak
Shivolians
Sikarians
Sinoraptor
Skrreea
Sky Spirits
Solanagen-based entites
Son'a
Soong-type Android
Spawn Beetle
Species 116
Species 125
Species 149
Species 259
Species 262
Species 263
Species 312
Species 571
Species 5174
Species 6339
Species 8472
Species 10062
Spores, Omicron Ceti III
Squid
Squill
Suliban
Swarm
Saataran
Serillians
Singularity Aliens
Subytt
Sarpedion
Solais
Sex Slave Trader Species
Skagaran