A fan-out semiconductor package includes a semiconductor chip having an active surface on which a connection pad is disposed and an inactive surface opposing the active surface, an encapsulant sealing at least a portion of the inactive surface, a first connection member disposed on the active surface and including a redistribution layer and a first via electrically connecting the connection pad to the redistribution layer, a passivation layer disposed on the first connection member, and an under-bump metal layer including an external connection pad disposed on the passivation layer and a second via connecting the external connection pad to the redistribution layer. In a vertical direction, the first and second vias are disposed within the external connection pad and do not overlap each other.