Gretchen Ong Ho (born 19 April 1990) is a Filipino volleyball player and television host. She played for the Ateneo Lady Eagles. She was a member of Fab 5 together with Ailysse Nacachi, Dzi Gervacio, Jem Ferrer and Fille Cainglet.
She played high school varsity volleyball with Immaculate Conception Academy-Greenhills. While in college, she played with Ateneo De Manila University (ADMU). With Petron XCS, she played the Philippine Super Liga Beach Volleyball Cup in 2015. She is the co-founder of the Beach Volleyball Republic.