Edwin Olmstead Keeler (born Ridgefield, January 12, 1846 – December 4, 1923) was a Republican Lieutenant Governor of Connecticut from 1901 to 1903. He had previously served as the first mayor of Norwalk, Connecticut from 1893 to 1894. He was a member of the Connecticut House of Representatives from 1893 to 1896, and was a member of the Connecticut Senate from 1897 to 1900. He served as President Pro Tempore of the Connecticut Senate. He served as a delegate to the Republican National Convention from Connecticut in 1896.