Rudolf Sellner, born Gustav Rudolf Sellner (25 May 1905 – 8 May 1990) was a German actor, dramaturge, stage director, and intendant. He represented in the 1950s a radical Instrumentales Theater (instrumental theatre). After decades of acting and directing plays, he turned to staging operas, and was a long-time intendant of the Deutsche Oper Berlin from 1961, when the Berlin Wall was built. He staged notable world premieres, including Ernst Barlach's play Der Graf von Ratzeburg in 1951, Ionesco's Mörder ohne Bezahlung in 1958, Giselher Klebe's Alkmene in 1961 for the opening of the Deutsche Oper, and Aribert Reimann's opera Melusine in 1971.