A series of raids on Deboyne were conducted by Allied forces against the Imperial Japanese Navy seaplane base in the Deboyne Islands of the Louisiade Archipelago between 9–11 May 1942. The seaplane base had been set up prior to the Battle of Coral Sea and became untenable and was abandoned by the Japanese, due to proximity to Allied airfields at Port Moresby and the failure of Mo Sakusen (Operation Mo).