Massey Hamilton Shepherd Jr. (1913–1990) was an American priest and scholar of the Episcopal Church. A prominent liturgist, he was one of the few American members of other Christian churches honored with an invitation to observe the Second Vatican Council of the Roman Catholic Church in the 1960s. He served on the Episcopal Church's Standing Liturgical Commission from 1947 to 1976 and was a leading figure in developing the 1979 revision of the Book of Common Prayer used by the Episcopal Church.