USS Halcyon

USS Halcyon may refer to:


 * USS Halcyon (SP-518), commissioned 14 May 1917 and decommissioned 24 June 1919


 * USS Halcyon (SP-1658), a patrol craft that served briefly in 1917


 * USS Halcyon II (SP-582), a 161-ton steam yacht purchased by the U.S. Navy in August 1917.