Mark Vanselow

Mark Vanselow, also credited as Mark Stephen Vanselow, is a screen artist best known for his work in supporting and character roles across American film and television. While his public biography remains limited, his on-screen footprint reflects a dependable performer often cast to add texture and credibility to everyday-world scenes.

Vanselow’s credits highlight his range in concise, scene-stealing parts. He appears as a Radio Announcer in The Open Door and as a Bartender in Hot Parts, roles that rely on timing and presence to set tone quickly. He also played Thomas on V.I.P., showing up within fast-moving episodic storytelling.

On major network dramas, he is remembered for grounded authority figures and local color, including a Diver on CSI: Crime Scene Investigation, a Neighbor on Heroes, and Officer Frank Lang on The Division. Taken together, these appearances position Vanselow as a familiar face in genre TV—an actor who helps build believable worlds, one character at a time.