Robert Muller (disambiguation)

Robert Muller, Robert Moeller, Robert Mueller, or Robert Müller may refer to:


 * Robert Mueller (Robert Swan Mueller III, born 1944) &mdash; Director of the FBI, investigator of the Pan Am 103 Lockerbie bombing
 * Bobby Muller (Robert O. Muller, born 1946) &mdash; American peace activist
 * Robert T. Moeller &mdash; United States Navy (1974–2010) vice admiral