Dave Klein (born May 31, 1979) is an American musician and punk rock bass player from Edmond, Oklahoma, United States. He plays bass for Screeching Weasel and Oklahoma Skate-Punk band They Stay Dead. Former bands include Black Flag, Good For You, The Proctologists, Bi-Products, P.D.B, From Parts Unknown, Jettison, Wretch Like Me (Owned & Operated Recordings 1997-2002), Euclid Crash, Bristol Park, On Again, and American Ruse.