A roof apparatus includes a guide rail extending in a front-rear direction of a vehicle, a drive shoe, a functional bracket, a front link member relatively rotatably connected at a front portion of the functional bracket and including a connecting portion, an engagement portion and a supporting portion, and a lifting mechanism connected at a rear portion of the functional bracket, wherein the guide rail includes a first guide portion guiding the supporting portion in response to an opening and closing operation of a movable panel and being closely located upwardly and downwardly of the supporting portion while the movable panel is in a fully-closed state, and the drive shoe includes a second guide portion guiding the engagement portion in response to the opening and closing operation of the movable panel and being closely located upwardly and downwardly of the engagement portion during the fully-closed state of the movable panel.