The Manapa-Tarhunta letter (CTH 191; KUB 19.5 + KBo 19.79) is a fragmentary text in the Hittite language from the 13th century BC. The letter was sent to the Hittite king by Manapa-Tarhunta, client king of the Seha River Land. In the letter, Manapa-Tarhunta discusses Hittite attempts to reassert control over northwest Anatolia. The letter is particularly notable for its mention of Wilusa, generally identified with Troy.