Gus Arnheim (September 4, 1897 – January 19, 1955) was an American pianist and an early popular band leader.
When Lyman organized a full dance orchestra, Arnheim came along as pianist, leaving to start his own group in 1927.
Arnheim's orchestra made at least three film short subjects for Warner Brothers' Vitaphone Corporation in 1928–29.
In 1930, when Paul Whiteman finished filming The King of Jazz for Universal, The Rhythm Boys vocal trio, consisting of Bing Crosby, Harry Barris and Al Rinker decided to stay in California and they signed up with Arnheim's band.
In the early 1930s, Arnheim "was heard on the Lucky Strike Dance Hour, which was broadcast weekly on NBC.