Affleck is a Scottish surname: it derives from Auchinleck and represents one of the pronunciations of that name. It may be pronounced with the stress on either syllable.
People surnamed Affleck include:
B. F. Affleck (1869–1944), an American cement businessman in the Chicago area
Ben Affleck (born 1972), an American actor, film director and screenwriter
Bruce Affleck (born 1954), a retired former professional ice hockey defenceman