The Episcopal Diocese of Missouri is the diocese of the Episcopal Church in the United States of America with jurisdiction over 54 counties in eastern Missouri. It has 42 congregations and is in Province 5. Its cathedral, Christ Church Cathedral, is in St. Louis, as are the diocesan offices. The current bishop is Deon K. Johnson.

Arthur Carl Lichtenberger was a bishop of the Episcopal Church in the United States. He served as Bishop of Missouri from 1952 to 1959, and as presiding bishop of the Episcopal Church from 1958 to 1964.