Robert Weil (1881–1960) was an Austrian writer for stage and screen.

Under the pseudonym Gustav Holm, he co-authored (with Ernst Décsey) a play Sissys Brautfahrt ("Sissy's bridal journey") which was later used for the libretto of the well-known operetta Sissy [de] by Ernst and Hubert Marischka.

He also used the pseudonym "Homunkulus".

• I Do Not Want to Know Who You Are (1932)
• Three on a Honeymoon (1932)
• Honeymoon Trip (1933)
• Adventure on the Southern Express (1934)
• Spring Parade (1934)
• Abschiedswalzer (1934)
• Ihr größter Erfolg [it] (1934)
• Winter Night's Dream (1935)
• Stradivari (1935)
• Ich liebe alle Frauen [it] (1935)
• Forget Me Not (1935)
• Konfetti [de] (1936)
• The King Steps Out (1936)
• The Charm of La Boheme (1937)
• Immer wenn ich glücklich bin (1938)
• Die unruhigen Mädchen [it] (1938)
• Addio Mimí! (1949)
• Die Deutschmeister [de] (1955)

• http://www.kabarettarchiv.at/Bio/Weil.htm