Arculus

Arculus may refer to:


 * The Roman tutelary god of chests and strongboxes (arcae); see Indigitamenta
 * A crossvein near the base of the wing in certain insects; see Glossary of entomology terms
 * Arculus (bivalve), a genus of the Neoleptonidae family of marine bivalve clams

People with the surname

 * Sir David Arculus (born 1946), British media figure, businessman and advisor to Government
 * Richard Arculus, Australian petrologist and volcanologist
 * Sir Ronald Arculus (1923–2016), British ambassador