Ronald Sylvester Barber (born August 25, 1945) is an American politician. He was a member of the United States House of Representatives from 2012 to 2015. Barber, a member of the Democratic Party from Arizona, served as district director for U.S. Representative Gabby Giffords before Giffords resigned her seat due to the severe injuries she sustained in an assassination attempt, during which Barber was also injured. He won the Democratic nomination for the special election to finish Giffords's term and was sworn into office on June 19, 2012.