A sunroof assembly includes a panel supporting part to support a movable panel in a vehicle width direction; a slider supported on a guide rail; and a link. One end of the link is rotatably connected to the panel supporting part, and the other end has a first guided part. The first guided part movable in a first guide groove of the slider. The link includes a first rotating shaft part between one end and the other end, which is supported on the guide rail in a way that is movable in the front-rear direction of the vehicle. The link rotating around the first rotating shaft part when the link rotates around the first rotating shaft part, and an end of the panel supporting part connected to the link is displaced in an up-down direction of the vehicle.