Samuel Andrew Cook (January 28, 1849 – April 4, 1918) was a U.S. Representative from Wisconsin. Born in the British Province of Canada (in what is now the modern Canadian province of Ontario), Cook moved with his parents to Calumet County, Wisconsin, in 1855.He attended the common schools in Fond du Lac and Calumet Counties.Cook enlisted as a private in Company A, Second Wisconsin Cavalry, under General George A. Custer, and served until the end of the Civil War.He lived on a farm in Calumet County until 1872, when he located in Marathon County and engaged in business.He moved to Neenah, Wisconsin in 1881.