A parallel link robot includes: a base portion; a movable portion; arms that connect the base portion and the movable portion in parallel; base actuators that are disposed on the base portion and that drive the respective arms; an additional actuator that drives an additional mechanism portion attached to the movable portion; an auxiliary link that pivotally connects the additional actuator to at least one of the arms; and a power transmission shaft portion that transmits a rotational driving force of the additional actuator to the additional mechanism portion. Each of the arms includes a drive link and two passive links. The auxiliary link bridges the two passive links and is pivotally connected to each of the two passive links. The power transmission shaft portion includes a ball spline in which a spline shaft and a nut are meshed with each other.