In Georgia folklore, the Altamaha-ha (or Altie) is a legendary creature, alleged to inhabit the myriad small streams and abandoned rice fields near the mouth of the Altamaha River (after which it is named) in southeastern Georgia, United States. Sightings are particularly reported around Darien and elsewhere in McIntosh County.

The exact nature of the Altamaha-ha is as mysterious as the domain in which it lives. Some, of course, say it is nothing but floating logs, masses of vegetation or known marine creatures. Believers, however, tell of a 30-foot long animal with flippers like a seal.