Laevidentalium (tusk-shells)
Laevilitorina (winkles)
Lamellaria (ear-cowries)
Larinopsis (larinopses)
Lasaea (lasaeas)
Laternula (lantern-shells)
Leachia (squids)
Ledella (nut-shells)
Legrandina (legrandinas)
Leiopyrga (kelp-shells)
Lepidoteuthis (squids)
Lepoderma (aplacophorans)
Leptochiton (chitons)
Lepton (leptons)
Leuconopsis (air-breathers)
Leucotina (pyramid-shells)
Liloa (bubble-shells)
Lima (file-shells)
Limacina (sea-butterflies)
Limaria (file-shells)
Limatula (file-shells)
Limea (file-shells)
Limnoperna (mussels)
Limopsis (limopses)
Linopyrga (pyramid-shells)
Liocranchia (squids)
Liostomia (pyramid-shells)
Liotella (false-top-shells)
Lironoba (rice-shells)
Lissarca (lissarcas)
Lissotesta (false-top-shells)
Litozamia (trophons)
Livonia (volutes)
Lodderena (false-top-shells)
Lodderia (glass-shells)
Loliolus (bay-squids)
Lophodoris (sea-slugs)
Lorica (chitons)
Loricella (chitons)
Lottia (limpets)
Lucerapex (turrids)
Lucidestea (rice-shells)
Lutraria (otter-shells)
Lycoteuthis (squids)
Lyria (volutes)