Robert Russell Whittaker (born September 18, 1939) is an American medical professional and former six-term U.S. Representative from Kansas, serving from 1979 to 1991.

Whittaker was born in Eureka, Kansas, and was educated in the Greenwood County public schools.

Whittaker's first foray into politics was as precinct committeeman and member of the city planning commission from 1970 to 1974.

After leaving Congress, he was hired as a senior legislative analyst at the Washington, D.C.-based lobbying and public relations firm Fleishman-Hillard.

This article incorporates public domain material from the Biographical Directory of the United States Congress