A fan-out sensor package includes: a substrate in which a through-hole is formed and portions of a wiring layer are exposed from an insulating layer; an image sensor having an active surface having a sensing region disposed below the through-hole of the substrate and connection pads disposed in the vicinity of the sensing region; an optical member disposed on the active surface of the image sensor; a dam member disposed in the vicinity of the sensing region; and an encapsulant encapsulating the substrate and the image sensor, wherein the third wiring layer and the connection pads are electrically connected to each other by connection members.