Ralph Campbell Sr. (1915 – May 15, 1983) was an American postal worker, civil rights activist, and organizer in Raleigh, North Carolina.

[5] Campbell served as president of the Raleigh Chapter of the National Association for the Advancement of Colored People from December 18, 1960[6] until February 21, 1965.

[8] The board allowed Bill to be transferred—and thus become the first black student to attend an all-white public school in the city—but denied the applications for Ralph Jr. and Mildred, citing overcrowding at Morson.

"[8] As a result of their push for their child to enroll in a white school, the Campbells faced death threats and briefly lived with relatives to ensure their safety.

[10] As Campbell was unable to leave his job at the post office, his wife June escorted Bill to Murphey Elementary on his first day of schooling there.

[9] In November 1982, Campbell campaigned for the reelection of U.S. Representative Ike Franklin Andrews, helping him win support from the local black community.

[9] On May 12, 1983, Campbell suffered a heart attack while working at Andrew's congressional office in Cary and was taken to Wake Medical Center in Raleigh for treatment.