Pagodula (trophons)

Paliolla (sea-slugs)

Panopea (gapers)

Paphies (wedge-shells)

Paracuneus (turrids)

Paradoris (sea-lemons)

Paramontana (false-turrids)

Paraseila (false-creepers)

Parilimya (parilimyas)

Parvamussium (saucer-scallops)

Parviterebra (dove-shells)

Patelloida (limpets)

Paxula (dove-shells)

Pecten (scallops)

Peculator (volute-mitres)

Pellasimnia (spindle-cowries)

Penion (whelks)

Pepta (nutmeg-shells)

Periploma (lantern-shells)

Persicula (margin-shells)

Petaloconchus (worm-shells)

Petricola (crypt-dwellers)

Phallomedusa (air-breathers)

Phasianella (pheasant-shells)

Phasianotrochus (kelp-shells)

Phenacolepas (false-limpets)

Philine (bubble-shells)

Philinopsis (sea-slugs)

Philippia (sundial-shells)

Pholas (angel-wings)

Phycothais (rock-shells)

Phyllocoma (murex-shells)

Phyllodesmium (sea-slugs)

Phytia (air-breathers)

Pisinna (false rice-shells)

Placamen (venuses)

Placida (sea-slugs)

Placiphorella (chitons)

Plastiscala (wentletraps)

Plaxiphora (chitons)

Plesiotrochus (monk-shells)

Pleurobranchaea (sea-slugs)

Pleurobranchus (sea-slugs)

Pleuroploca (tulip-shells)

Plocamopherus (sea-slugs)

Pododesmus (saddle-oysters)

Polinices (sand-snails)

Polybranchia (sea-slugs)

Polycera (sea-slugs)

Polyschides (tusk-shells)

Poroleda (nut-shells)

Poromya (spoon-shells)

Powellisetia (rice-shells)

Pratulum (cockles)

Pronucula (nutlet-shells)

Propecuna (condyl-clams)

Propeleda (nut-shells)

Propilidium (limpets)

Proterato (false-cowries)

Prothalotia (kelp-shells)

Protoginella (margin-shells)

Prototyphis (murex-shells)

Pseudamycla (dove-shells)

Pseudarcopagia (tellins)

Pseudoliotia (glass-shells)

Pseudoneaera (spoon-shells)

Pseudopisinna (false eaton-shells)

Pseudoskenella (pyramid-shells)

Pterochelus (murex-shells)

Pterotrachea (sea-elephants)

Pterygioteuthis (squids)

Pugillaria (siphon-shells)

Pugnus (margin-shells)

Puncturella (notch-limpets)

Puposyrnola (pyramid-shells)

Pusillina (rice-shells)

Putilla (false-top-shells)

Puyseguria (neoleptons)

Pyramidellidae unplaced (pyramid-shells)

Pyrazus (mud-creepers)

Pyrgiscus (pyramid-shells)

Pyxipoma (worm-shells)