Marvin Lu Cruz (born December 31, 1984) is a Filipino former professional basketball player in the Philippine Basketball Association.

Cruz once played as starting point guard for the SEABA gold winner RP-Harbour Team.

He led the PBL in assists and made the Mythical Five, then he also made the All-Tournament team in the PBL Silver Cup while playing for Toyota Balintawak.

With UP Integrated School, he led his team to its first-ever UAAP juniors title in 2002, when he was also named Finals Most Valuable Player.

This biographical article relating to a Filipino basketball figure is a stub.