Edwin Atwater (September 14, 1808 – June 18, 1874) was a Canadian businessman, corporate director and municipal politician in Montreal. He started a business dealing paints, varnish and plate-glass, and was the first business to import glass into Canada. He served on the jury for the murder trial of François Jalbert, accused of murdering a British officer during the Lower Canada Rebellion. The jury acquitted Jalbert, in spite of strong public opinion by the anglophone community in favour of a guilty verdict.
In 1846 he was a founder of the Montreal City and District Savings Bank, which continues in business today as the Laurentian Bank of Canada. He held various positions in the company. He was elected as a councillor to the Montreal City Council in 1850, and two years later was elected as an alderman to the same council. His focus as an elective representative was to improve the city's water infrastructure. In 1861 he was president of the Montreal Board of Trade and continued participating in business ventures in the Montreal area. In 1871 Montreal named a street after him in the ward that he represented on city council. Since then, the Atwater Library, Atwater Market, and Atwater station have also been named for him.