Mary Joy "Majoy" Dela Cruz Baron (born December 12, 1995) is a Filipino volleyball player.

[3] Baron was a member of the DLSU Lady Spikers which won the women's UAAP Volleyball Championship from year 2016 to 2018.

[8][9] In her last playing year in the collegiate ranks, she led the squad as its team captain to their 3rd consecutive championship.

With F2 Logistics Cargo Movers, Baron won the 2017 PSL Grand Prix Conference championship[10] and was awarded the Second Best Middle Blocker.

Baron participated in the 2019 ASEAN Grand Prix together with the Philippines women's national volleyball team where she played as the Middle Blocker.