Amos Gager Throop (/ˈtruːp/ TROOP; 1811–1894) was a businessman and politician in Chicago, Illinois during the 1840s and 1850s. Most famously he was known for being a staunch abolitionist prior to the Civil War. In Chicago he lost two campaigns to be that city's mayor in 1852 and 1854. In both elections he was the nominee of the little-known Temperance Party, facing tough opposition from the Democratic Party. At the time of the Great Chicago Fire Amos was the city treasurer. He was instrumental in securing financing from New York to rebuild the wooden frontier town into a city of brick and mortar. Grateful Chicagoans renamed Main Street to Throop Street.