Provided is a vehicle seat sliding apparatus including a lower rail, an upper rail to the lower rail, a locking mechanism, unlocking mechanism, an unlocked-state maintaining lever, and an unlocked-state releasing lever, in which the unlocked-state releasing lever includes a rotational operating portion configured to rotate in a first direction and to be capable of coming into contact with an operating member in the direction of the relative movement of the upper rail, and the unlocked-state releasing lever is configured to press and move the unlocked-state maintaining lever in the direction of releasing the maintenance of the unlocked state and is capable of rotating in the first direction is disabled without moving the unlocked-state maintaining lever from the maintaining position.