Manapa-Tarhunta was a king of Seha River Land in western Anatolia during the Late Bronze Age.
He was a younger son of King Muwa-Walwis of the Seha River Land, born ca.
His brothers, led by the eldest, Ura-Tarhunta, deposed Manapa-Tarhunta and drove him to Karkiya territory (which may be classical-era Caria).
On Arnuwanda's death that year, an otherwise unknown chieftain named Uhha-Ziti revolted against the Hittites in Arzawa to the Seha River's south.
Uhha-Ziti convinced Manapa-Tarhunta to join the rebellion, but Mursilis II subsequently defeated the alliance and prepared to destroy the Seha River's cities.