John Karlen was born on 28 May 1933 in Brooklyn, New York, USA. His birth name was John Adam Karlewicz. His height is 178cm.

John Karlen appeared in the movie "Cagney & Lacey"(1982), "Dark Shadows"(1966), Impulse(1984), Night of Dark Shadows(1971), Racing with the Moon(1984), Surf Ninjas(1993)。