Horst Gentzen (1930-1985) was a German voice actor who voiced Kermit the Frog on Die Muppet Show and in the German dubs of The Muppet Movie and The Muppets Take Manhattan. Trained in the stage, Gentzen was active in the West Berlin theaters as a juvenile, beginning in 1946, and soon transitioned into films.
Beginning in the 1950s, Gentzen became active in radio and as a voice actor, dubbing Jerry Lewis in more than 20 films, Ringo Starr in A Hard Day's Night and Help!, Peter Lorre in Casablanca and the Mr. Moto series, David Warner in Tom Jones, and Eddie Deezen in Grease. Animation credits included Cowslip in Watership Down and such Disney roles as Ludwig Von Drake, The Reluctant Dragon, and the fox in Mary Poppins. When Gentzen died, Andreas von der Meden, who played Kermit in Sesamstrasse and alternated with Gentzen in films, took over full-time as the frog.