Isaac Taft Stoddard (January 19, 1851 – November 10, 1914) was an American businessman. Born in the State of New York, he started in the insurance industry there and in Connecticut before turning his attention to copper mining in the Arizona Territory. He owned either personally or with investors several mines in Yavapai County, built the first smelter in that part of the state, and secured the investment of over $1,000,000 in the mines to increase production. Another business venture was assisting out-of-territory corporations in incorporating in the territory. He served as the twelfth Secretary of the Arizona Territory from 1902 to 1904, but was forced to resign amid criticism over conflict between this business and his position as Secretary. He continued in mining and incorporating, and