Nacellidae is a taxonomic family of sea snails or true limpets, marine gastropod molluscs in the clade Patelloidea.
Cellana is a genus of sea snails or limpets, marine gastropod molluscs in the family Nacellidae, the true limpets.

Cellana denticulata, or the denticulate limpet, is a species of true limpet, a marine gastropod mollusc in the family Nacellidae, one of the families of true limpets. It is endemic to New Zealand.
Cellana eucosmia is a species of predatory sea snail, a marine gastropod mollusk in the family Naticidae, the moon snails.

Cellana exarata, common name the black-foot ʻopihi and Hawaiian blackfoot is a species of edible true limpet, a marine gastropod mollusc in the family Nacellidae, one of the families of true limpets. ‘Opihi are significant in Hawaiian history where they have had many uses such as food, tools, and jewelry. They are known as a “fish of death.”

Cellana flava is a species of true limpet, a marine gastropod mollusc in the family Nacellidae, one of the families of true limpets.

Cellana grata is a true limpet, that feeds on epilithic biofilm.

Cellana livescens is a species of sea snail, a marine gastropod mollusk in the family Nacellidae.

Cellana nigrolineata is a species of sea snails or limpets, marine gastropod molluscs in the family Nacellidae, one of the families of true limpets.
Cellana ornata is a species of true limpet, a marine gastropod mollusc in the family Nacellidae, one of the families of true limpets.
Cellana radians, common name the radiate limpet, is a species of true limpet, a marine gastropod mollusc in the family Nacellidae, which is one of the true limpet families.
Cellana radiata, is a species of predatory sea snail, a marine gastropod mollusk in the family Nacellidae,
Cellana rota is a species of true limpet, a marine gastropod mollusc in the family Nacellidae, one of the families of true limpets.

Cellana sandwicensis, common name the yellow-foot ʻopihi, is a species of edible true limpet, a marine gastropod mollusc in the family Nacellidae, one of the families of true limpets.

Cellana solida is a species of sea snail or true limpet, a marine gastropod mollusk in the family Nacellidae.

Cellana stellifera, common name the star limpet, is a species of true limpet, a marine gastropod mollusc in the family Nacellidae.

Cellana strigilis is a species of large limpet, a marine gastropod mollusc in the family Nacellidae, one of the families of true limpets.

Cellana talcosa, the talc limpet or turtle limpet is a species of true limpet, a marine gastropod mollusc in the family Nacellidae, which is one of the true limpet families.
Cellana testudinaria is a species of sea snail, a marine gastropod mollusk in the family Nacellidae.
Cellana toreuma is a species of limpet, a marine gastropod mollusk in the family Nacellidae.

Cellana tramoserica is a species of marine gastropod mollusc in the family Nacellidae, one of the families of true limpets.

Nacella is a southern, cold-water genus of true limpets, marine gastropod molluscs in the family Nacellidae, the true limpets.

Nacella deaurata is a species of sea snail, a true limpet, a marine gastropod mollusk in the family Nacellidae, one of the families of true limpets.

Nacella kerguelenensis is a southern, cold-water species of limpet, a marine gastropod mollusc in the family Nacellidae, the true limpets.

Nacella magellanica is a species of sea snail, a true limpet, a marine gastropod mollusk in the family Nacellidae, one of the families of true limpets.

Nacella mytilina is a species of sea snail, a true limpet, a marine gastropod mollusk in the family Nacellidae, one of the families of true limpets.