Richard Gentry was an American politician and military officer who died during the Seminole Wars. The Missouri county of Gentry is named for him. He was the first mayor and founder of Columbia, Missouri.

Gentry County is a county located in the northwestern portion of the U.S. state of Missouri. As of the 2020 census, the population was 6,162. Its county seat is Albany. The county was organized February 14, 1841 and named for Colonel Richard Gentry of Boone County, who fell in the Seminole War in 1837.