William Hood Dunwoody (March 14, 1841 – February 8, 1914) was an American banker, miller, art patron and philanthropist. He was a partner in what is today General Mills and for thirty years a leader of Northwestern National Bank, today's Wells Fargo. Dunwoody sold American flour to British bakers, creating an export market and environment in which Minneapolis, Minnesota, became for a time the world's center of flour milling. By 1901, he was one of sixteen millionaires in Minneapolis.