The third and final season of Happy Endings, an American television series. ABC officially renewed Happy Endings for a third and final season on May 11, 2012. It was also announced it would move to a new time-slot on Tuesdays at 9:00pm, as a lead-in to Don't Trust the B---- in Apartment 23. The season premiered on October 23, 2012. On February 13, 2013, ABC announced that, starting March 29, 2013, the series would move to Fridays at 8:00-9:00 p.m ET/PT with back-to-back original episodes. The series finale aired on May 3, 2013.

ABC's scheduling of Happy Endings's third and final season was labeled the "Worst TV Strategy" of the 2012-13 television season.