- Any of various distinct Native American cultures flourishing from around the 5th century BC to the 16th century AD especially in the Ohio and Mississippi Valleys, practicing settled agriculture and known for their often large burial, temple, or effigy mounds.
- A member of a people associated with any of these cultures.
(plural mound builders)
- Any of several Native American people who constructed large mounds for ceremonial or burial purposes
- A megapode.