Graham Boynton Purcell Jr. (May 5, 1919 – June 11, 2011),[1] was a United States representative from Texas' 13th congressional district.

Born in Archer City in Archer County, a part of the Wichita Falls metropolitan statistical area, Purcell attended public schools and received his Bachelor of Science from the Agricultural and Mechanical College of Texas in 1946, and his LL.B.

He was a delegate to the 1960 and 1964 Democratic national conventions, which met in Los Angeles and Atlantic City, New Jersey, respectively to nominate the Kennedy-Johnson and the Johnson-Humphrey tickets, both of which prevailed in Texas.

In 1966, when John Tower won his second term as U. S. senator, Purcell defeated the Republican Dillard Carlisle "Bunny" Norwood (1913-1993) of Wichita Falls.

On November 22, 1963, Purcell was riding in the motorcade's third vehicle behind U.S. President Kennedy during the assassination in Dallas, Texas.