Lev Zetlin (July 14, 1918 – December 4, 1992) was an Israeli-American civil and structural engineer. Founder of the engineering consulting firm Lev Zetlin & Associates, he developed several innovations in structural engineering including the double layer bicycle wheel roof system which he first employed at the Utica Memorial Auditorium and later patented. Zetlin was the structural engineer on 14 pavilions at the 1964–65 New York World's Fair including the New York State Pavilion which utilized his double layer cable suspended roof design.