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)