Achatinella lila is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Achatinellidae.

The embryonic whorls are burnt sienna brown (weathering to whitish in adult shells), or sometimes there is a light median zone.

[4] Achatinella lila is the first Hawaiian achatinelline to be reintroduced from captive stocks, a significant milestone in the conservation of the endemic gastropod fauna of the islands.

The snails also have significantly long lifespans (>10 years), making these species particularly prone to population declines as a result of invasive predators, habitat alteration, and over-collection.

Prior to the modern reintroductions, the species was limited to a single wild population in the Ko'olau Mountains of Oahu.