John Vic Ortiz De Guzman (born September 23, 1993)[1] is a Filipino volleyball player, actor, and singer.

His involvement with the sport enabled him to study at no cost at the De La Salle–College of Saint Benilde (CSB) as an athletic scholar.

[2] In his final school year as a college student he led his team in winning the men's volleyball title of NCAA Season 92.

[5][6] He was also part of the national team, when it competed as Rebisco PH at the 2021 Asian Men's Club Volleyball Championship.

[2] Marco is characterized as someone who has many secrets and De Guzman was told to express emotions through his eyes as part of playing the role.

[12] In 2022, he played the role of Dr. Kenneth 'Ken' Prado, a snobbish, judgemental, and arrogant doctor in the APEX Medical Hospital in GMA's hit drama series, Abot-Kamay na Pangarap.