Walter Giller was a German actor. He was very successful in the 1950s and 1960s, when he was often seen as a comedic leading man. One of his most successful and more serious roles was in Roses for the Prosecutor.

Roses for the Prosecutor is a 1959 West German comedy film with tragical and critical elements, directed by Wolfgang Staudte and starring Martin Held, Walter Giller and Ingrid van Bergen. It was one of the few German movies of the 1950s which openly addressed the German Nazi era.