Lutz Mackensy (b. 1944) is a German actor who dubbed the voice of Bob in the first four seasons of Sesamstrasse and on records, prior to the introduction of German-produced street scenes. As the regular dubbing voice for Philip Michael Thomas on Miami Vice, he also voiced Tito in the "Miami Mice" spoofs on Sesamstrasse. Other Muppet/Henson dub credits include Dr. Bunsen Honeydew in the German dub of It's a Very Merry Muppet Christmas Movie, various refrigerator creatures in Die Dinos, and the Mock Turtle in Alice in Wonderland.

On camera, Mackensy has played Police Komissar Zimmerman on the detective series Stubbe- Von Fall zu Fall since 1995. Other voice assignments include dubbing Rowan Atkinson in many films and series, Derek Jacobi in Gosford Park, and Gene Kelly in Take Me Out to the Ball Game!