Tantamani (Assyrian pronunciation, identical to Tandaname) or Tanwetamani (Egyptian) or Tementhes (Greek) (d. 653 BCE) is a Pharaoh of Egypt and the Kingdom of Kush located in Northern Sudan and a member of the Nubian or Twenty-fifth dynasty of Egypt.

His prenomen or royal name was Bakare which means "Glorious is the Soul of Re."

He was the son of King Shabaka and the nephew of his predecessor Taharqa.

In some sources he is said to be the son of Shebitku.

Assyrian records call Tantamani a son of Shabaka and refer to Qalhata as a sister of Taharqa.

Some Egyptologists interpreted the Assyrian text as stating that Tantamani was a son of Shebitku, but as he was most likely a son of Shabaka himself, it is now more common to consider Tantamani a son of Shabaka.