High School Musical 3: Senior Year is a musical film released to cinemas in 2008. It is the third installment in Disney's High School Musical film franchise. Its theatrical release in the United States began on October 24, 2008. Kenny Ortega returned as director and choreographer, as did all six primary actors.

This latest sequel follows high school seniors Troy and Gabriella as they are faced with the challenging prospect of being separated after graduating from high school. Joined by the rest of their East High Wildcat friends, they stage an elaborate spring musical reflecting their experiences, hopes, and fears about the future.

In spite of receiving mixed reviews, in its first three days of release, High School Musical 3: Senior Year grossed $42 million in North America and an additional $40 million overseas, setting a new record for the largest opening weekend for a musical film.