Christian Jay Calaguio (born December 26, 1975, in Makati, Philippines) is a Filipino former professional basketball player.

[2] Calaguio starred for the San Beda Red Cubs in high school, before graduating in 1994.

[3] He teamed up with Kerby Raymundo and Aldin Ayo under Coach Louie Alas, and started over Willie Miller.

Calaguio first played for the San Juan Knights in the Metropolitan Basketball Association (MBA), where he teamed up with Chito Victolero.

[10] During the 2002 Governors' Cup, he was loaned to RP-Selecta Ice Cream, along with his teammate Chris Jackson.

[11][12] In the 2003 All-Filipino Cup, Calaguio exploded with 27 points including a triple with 9.6 seconds remaining as Shell downed the Sta.

[2] After Shell left the PBA, Calaguio was traded for the San Miguel Beermen's Joey Mente.

[21] In 2019, Calaguio got an offer to come out of retirement and play for the Marikina Shoemasters in the Maharlika Pilipinas Basketball League (MPBL).