Marcos Luna Ruiz (born 5 April 2003) is a Spanish footballer who plays as a right-back for UD Almería.
Born in Zaragoza, Aragón, Luna was a Real Zaragoza youth graduate. He made his senior debut with the reserves on 6 January 2022, starting in a 2–0 Tercera División RFEF away loss against CD Giner Torrero.