An embodiment relates to a lens actuator and a camera module including same. A lens actuator according to an embodiment may comprise: a base; a pin coupled to the base; a housing including a group of lenses to be moved along the pin in an optical axis direction; a magnet disposed on one side of the housing; a yoke spaced apart from the magnet; and a coil disposed between the magnet and the yoke. The housing may include a guide hole disposed at one side thereof and a guide groove disposed at the other side thereof. The pin may include a first pin disposed in the guide hole, and a second pin disposed in the guide groove. An attractive force may be applied between the yoke and the magnet.