George Ashton Oldham (August 15, 1877 – April 7, 1963) was the third Bishop of the Episcopal Diocese of Albany in the United States from 1929 to 1950, during the turbulent times of The Great Depression and World War II. He was also notable as the primary author of the catechism used in the Episcopal Church (United States) for decades until 1979. Now largely forgotten, Oldham was a major religious leader for several decades in the middle of the 20th and a serious candidate for presiding bishop.