A fan-out semiconductor package includes: a semiconductor chip; a first connection member including a plurality of redistribution layers and one or more layer of vias; an encapsulant; and a second connection member, wherein the encapsulant has first openings exposing at least portions of the first connection member, the first connection member has second openings exposing at least portions of a redistribution layer disposed at an uppermost portion among the plurality of redistribution layers, at least portions of the first openings and the second openings overlap each other, and a content of a metal constituting the plurality of redistribution layers and the one or more layer of vias is higher in a lower portion of the first connection member than in an upper portion of the first connection member.