John Boyd Christenbury (February 13, 1907 – July 17, 1944) was an American college football, basketball and baseball coach. His collegiate career began in 1938 when he became athletic director at Brevard College, serving there until 1940. While at Brevard, Christenbury also served as head football coach in 1938 and 1939. In 1940, he moved to East Carolina Teachers College, now East Carolina University, where he assumed the role of head coach for men's football and basketball in 1940 and baseball in 1941. Christenbury's 1941 football team went 7–0 and recorded the only undefeated season in East Carolina history. He did not coach football in 1942 due to the outbreak of World War II, although he continued coaching baseball through the 1942 season and basketball until early 1943.