Campbell Gray (January 6, 1879 – May 16, 1944) was an American bishop of the Episcopal Church. He was the second Bishop of Northern Indiana.
Gray was born on January 6, 1879, in Bolivar, Tennessee, the son of an Episcopal priest and later bishop, William Crane Gray, and his second wife, Fannie Campbell (Bowers) Gray. He attended the University of the South in Sewanee, Tennessee, and received a B.A. in 1901 and an M.A. in 1902. He started his theological studies at Sewanee but transferred after one year to the General Theological Seminary in New York City where he graduated in 1904.
Gray was ordained to the diaconate in 1904 and to the priesthood in 1905. He worked as a missionary in Southern Florida from 1904 to 1914 when he became vicar of St. Augustine's Episcopal Church in Rhinelander, Wisconsin. He stayed there until 1922 when he left to become rector of St. Paul's Episcopal Church in Peoria, Illinois. In 1925 he was elected bishop coadjutor of the Episcopal Diocese of Northern Indiana, but John Hazen White died before he could be consecrated so Gray was immediately consecrated to the episcopate immediately as the diocesan bishop.
Gray married Virginia Neil Morgan (born September 18, 1886) on November 1, 1905. They had five children, one son, Francis Campbell Gray, became an Episcopal priest and the sixth Bishop of Northern Indiana. Gray's wife died in February 1978 while residing in Davenport, Florida.
In 1925, Gray was awarded an honorary Doctor of Divinity (D.D.) degree by Nashotah House and, in 1926, honorary doctorates from Sewanee (D.D.) and the General Theological Seminary (S.T.D.).