there is provided a waterproof connector . the waterproof connector comprises a connector member supporting a ferrule to be butted against a target ferrule disposed in a target connector , the connector member being adapted to be locked to an adapter member of the target connector by an action of a lock operation portion provided in the connector member ; unlocking means being adapted to operate the lock operation portion to release the locked state ; and a housing body allowing the unlocking means to be slidably moved . the waterproof connector is adapted to be released from the connection with the target connector in such a manner that the unlocking means is allowed to be moved away from the connector member , whereby the unlocking means is operable to operate the lock operation portion to release the locked state , and to move the connector member away from the adapter member to release the fitting .