The Oscar-winning "Argo" filmmaker dedicated the degree to his mother Christine at Sunday's commencement ceremony, the Boston Herald reported.
"This is a spectacular honor for me," Affleck said, encouraging the class of 2013 to "Go get 'em!"
Affleck, 40, took classes at Occidental College in Los Angeles and the University of Vermont but never graduated.
Notable deaths of 2014 [PHOTOS]
Megan Fox to star in James Franco's 'Zeroville'