Elijah Edmund Spencer (19 April 1846 – 7 August 1919) was a Canadian politician in the province of Quebec.
Born in Saint-Armand-Est (Frelighsburg), Canada East, the son of United Empire Loyalists Ambrose S. Spencer and Mary Thomas, Spencer was educated at the Frelighsburg Grammar School and then studied in Poughkeepsie, New York.
A farmer, he was president of the Missisquoi County Agricultural Society.
He was also president of the Missisquoi and Rouville Mutual Fire Insurance Company.
He was first elected to the Legislative Assembly of Quebec for the electoral district of Missisquoi in 1881.