Acirsa is a genus of predatory sea snails, marine prosobranch gastropod mollusks in the family Epitoniidae.

They are commonly known as wentletraps.

[2] According to the World Register of Marine Species, the following species with valid names are included within the genus Acirsa :[2] The following species are also named by ITIS and in the book New Zealand Mollusca, by A. Powell [3] Some new species (Acirsa alpha, Acirsa beta, Acirsa delta, and Acirsa epsilon) have been named by Squires and Saul in 2003.

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