A sunroof apparatus for a vehicle includes a movable panel, a guide rail, a support bracket, a first sliding member, a second sliding member, a check mechanism restricting a movement of the movable panel in a front-rear direction of a vehicle to bring the movable panel to a tilt-up state and releasing the restriction of the movement of the movable panel while maintaining the tilt-up state, an engagement and disengagement switching mechanism including a first member and a second member supported by one and the other of the first sliding member and the second sliding member, a holding portion provided at the first sliding member, and a retention portion provided at the second sliding member and held to be non-movable in a vehicle width direction by the holding portion in a case where the first member and the second member are engaged with each other.