Robert Keller (1828-1891) was a German music editor.
Keller was born on 6 January 1828 in Harpersdorf in Lower Silesia. He moved to Berlin where he became a musical editor for the music publishing company N. Simrock. Keller edited and arranged a substantial amount of works by Johannes Brahms and Antonín Dvořák. He died in Berlin on 16 June 1891.
- Bozarth, G.S.; Martin, W. (1996). The Brahms-Keller Correspondence. University of Nebraska Press. ISBN 0-8032-1238-0.