Hays Hamilton Rockwell (born August 17, 1936) is an American prelate who was ninth bishop of the Episcopal Diocese of Missouri.
He was educated at Brown University (B.A., 1958) and the Episcopal Theological School in Cambridge, Massachusetts (B.Div.
He began his priestly career at St. George's School, Middletown, Rhode Island (1961–69) and then moved to Rochester, New York where he served first as chaplain at the University of Rochester (1969–71) and then as dean at Bexley Hall Theological Seminary (1971–76).
From there he moved to New York City in 1976 where he served for fifteen years as the fourteenth rector of St. James' Episcopal Church on the Upper East Side.
Under his leadership St. James' initiated a ministry for the homeless and became one of the first churches to divest from investments in apartheid South Africa.