Greatheart may refer to:
- Greatheart (Birthright novel), a 1996 fantasy novel by Dixie Lee McKeone
- Greatheart (Dell novel), a 1918 novel by Ethel M. Dell
- Greatheart (film), a 1921 film directed by George Ridgwell
- Greatheart, a character from The Pilgrim's Progress by John Bunyan
- Greatheart Mesa, a landform in Utah, USA.