Conn

Conn may refer to:


 * Conn (name), a family name and a masculine given name
 * Conn, mythological son of Ler from the Children of Lir legend
 * Conn of the Hundred Battles, a figure from Irish mythology
 * Jerome W. Conn, American endocrinologist
 * Connecticut, State in the northeastern United States
 * Connecticut College, a liberal arts college in New London, Connecticut, USA
 * Conn, Mississippi, United States
 * Conn, Ontario, Canada
 * Conn (nautical), the duty of giving directions for movement from the deck of a ship to the helm
 * C.G. Conn, Inc., a manufacturer of musical instruments
 * CONN (functional connectivity toolbox), a cross-platform imaging software program