William King was an American politician who served as the 13th Governor of Maine from 1838 to 1841. He was a member of the Democratic Party and played a significant role in the state's early political landscape. King was known for his efforts in promoting economic development and infrastructure improvements during his tenure. Before becoming governor, King was also a prominent figure in the U.S. Congress, where he represented Maine's 1st congressional district. His political career was marked by his commitment to the interests of his constituents and his involvement in various legislative initiatives that aimed to benefit the state and its residents.