David Alexander Hess (September 19, 1936 – October 7, 2011) was an American actor, singer, songwriter, and director. He came to prominence for his portrayals of murderous villains and gruff characters in several films in the 1970s and 1980s.

Hess originally worked as a songwriter in the 1950s, co-writing songs recorded by Elvis Presley and Pat Boone, but garnered international attention for his feature film debut portraying Krug Stillo in Wes Craven's exploitation horror film The Last House on the Left (1972). He played several hard-edged roles as criminals and rapists in the Italian films Hitch-Hike (1977) and The House on the Edge of the Park (1980) as well as a supporting role in Craven's Swamp Thing (1982). He made his directorial debut with the slasher film To All a Goodnight (1980).

In his later life, Hess was affiliated with the California Film Institute, where he taught improvisational theater in the institute's youth programs. He died of a heart attack on October 7, 2011 near his home in Tiburon, California after attending a local concert.