George Harold Clements (January 26, 1932 – November 25, 2019) was an American Roman Catholic priest who, in 1981, became the first Catholic priest in the Chicago area to adopt a child. Through his founding of several programs, including One Church-One Child, One Church-One Addict, and One Church-One Inmate, he brought greater recognition to social problems and encouraged the adoption of African-American children. In June 1969, Father Clements became the first black pastor of Holy Angels Catholic Church on the South Side of Chicago. He is also well known for his involvement in civil rights activities during a period that extended from the late 1960s to present.