Sue Keller (born July 7, 1952 in Allentown, Pennsylvania) is an American ragtime, pianist and singer, who has released several albums. As a child, she had flute and singing lessons, as well as playing the guitar. She attended DePauw University. She played professionally in various styles before settling on ragtime and old forms of jazz. She founded the publishing firm Ragtime Press and the record label HVR in 1992.
Keller was a contestant on the quiz show Jeopardy! in 1997, winning three games and $28,400. She was the festival music director for the Scott Joplin International Ragtime Foundation from 2003 through 2009 and was awarded the foundation's 2010 Friend of Ragtime Award.