Elisha Tyson (December 18, 1750 – February 16, 1824) was an American colonial millionaire and philanthropist who was active in the abolition movement, Underground Railroad, and African colonization movement. He helped black people escape slavery by establishing safe houses, or Underground Railroad stations, on the route from Maryland to Pennsylvania. He purchased the freedom of blacks at slave auctions. He also initiated lawsuits for kidnapped blacks and created a group of vigilantes to prevent blacks from being kidnapped and enslaved. He also returned some kidnapped people from Liberia returned to their home country.