- Sarsia piriforma
- Sarsia striata
- Sarsia tubulosa
- Schistomysis kervillei
- Schistomysis ornata
- Schistomysis parkeri
- Schistomysis spiritus
- Scina borealis
- Sepia elegans
- Sepia officinalis
- Sepia orbignyana
- Sepiella japonica
- Sepietta neglecta
- Sepietta oweniana
- Sepiola atlantica
- Sepiola aurantiaca
- Sergestes arcticus
- Sergia robusta
- Siriella armata
- Siriella clausii
- Siriella jaltensis
- Siriella norvegica
- Skogsbergia megalops
- Soestia zonaria
- Solmaris corona
- Spadella cephaloptera
- Spirontocaris lilljeborgii
- Spirontocaris phippsii
- Spirontocaris spinus
- Staurophora mertensii
- Stenoteuthis pteropus
- Styliola subula
- Stylocheiron abbreviatum
- Stylocheiron elongatum
- Stylocheiron longicorne
- Stylocheiron maximum
- Sulculeolaria biloba
- Synasterope norvegica
- Systellapsis debilis
- Tesserogastria musculosa
- Teuthowenia megalops
- Thalia democratica
- Thamnostoma russelli
- Themisto abyssorum
- Themisto compressa
- Thetys vagina
- Thoralus cranchii
- Thysanoessa gregaria
- Thysanoessa inermis
- Thysanoessa longicaudata