Thornapple may refer to:
Plants Datura species Crataegus species Solanum incanum
Places in the US Thornapple Township, Michigan Thornapple, Wisconsin, a town Thornapple (community), Wisconsin, an unincorporated community Thornapple River, Michigan Thornapple River (Wisconsin) Thornapple Trail, Michigan
Other uses Brutus P. Thornapple, the main character in the comic strip The Born Loser Thornapple (band), South Korean rock band
See also Little Thornapple River (disambiguation)