Sitdjehuti/Satibu (d. 1550/1500 BC, also Satdjehuti; "Daughter of Thoth") was a princess and queen of the late Seventeenth Dynasty of Egypt.

She was married to her (half-)brother Seqenenre Tao and bore him a daughter, Ahmose.

She is mentioned on the mummy shroud of her daughter Ahmose, which was found in the Valley of the Queens (QV47).

She must have been a woman of relatively old age, having outlived Ahmose I and possibly Amenhotep I. Sitdjehuti's mummy was discovered around 1820, along with its coffin, golden mask, a heart scarab, and linens donated by her niece Queen Ahmose-Nefertari.

The linen is inscribed with the text: The coffin lid is now held at the Staatliche Sammlung für Ägyptische Kunst, Munich, while the mummy mask is located in the British Museum (EA 29770).