A latch device has a housing, a sliding body including a striking portion abutting against a striker and disposed relative to the housing, a spring member urging the sliding body in a direction such that the sliding body protrudes from the housing, and an engaging body rotatably supported relative to the sliding body and including a claw portion on the end of the engaging body. The engaging body moves between a locking position wherein the claw portion is protruded to a striking portion side and engages with the striker, and a locking release position wherein the claw portion is retracted from the striking portion side and is released from engagement with the striker.