The 2008 UST Growling Tigers men's basketball team represented University of Santo Tomas in the 71st season of the University Athletic Association of the Philippines. The men's basketball tournament for the school year 2008-09 began on July 5, 2008 and the host school for the season was the University of the Philippines who were celebrating their centennial year. The Growling Tigers was the season's top rebounding team with a 48.4 per game average.