- Phatnacantha icosaspis
- Phialella falklandica
- Phialopsis diegensis
- Phippsiella nipoma
- Pholidoteuthis boschmai
- Phormacantha hystrix
- Phormospyris stabilis scaphipes
- Phormospyris stabilis stabilis
- Phormostichoartus corbula
- Phorticium clevei
- Phractopelta cruciata
- Phractopelta dorataspis
- Phractopelta histrix
- Phractopelta stauropora
- Phractopelta tessaraspis
- Phronima atlantica
- Phronima colletti
- Phronima curvipes
- Phronima pacifica
- Phronima sedentaria
- Phronima solitaria
- Phronima stebbingi
- Phronimella elongata
- Phronimopsis spinifera
- Phrosina semilunata
- Phtisica marina
- Phyllopus aequalis
- Phyllopus bidentatus
- Phyllopus helgae
- Phyllopus impar
- Phyllorhiza punctata
- Phyllostaurus cuspidatus
- Phyllostaurus echinoides
- Phyllostaurus quadrangulus
- Phyllostaurus siculus
- Physalia physalis
- Physophora hydrostatica
- Picroceroides tubularis
- Pilarella longicornis
- Pilumnoides coelhoi
- Pilumnoides hassleri
- Pilumnus caribaeus
- Pilumnus dasypodus
- Pilumnus diomedeae
- Pilumnus floridanus
- Pilumnus quoyi
- Pilumnus reticulatus
- Pilumnus spinosissimus
- Pinnaxodes chilensis
- Pinnaxodes tomentosus