Sopdu (also rendered Septu or Sopedu) was a god of the sky and of eastern border regions in the religion of Ancient Egypt.
He was Khensit's husband.
As a sky god, Sopdu was connected with the god Sah, the personification of the constellation Orion, and the goddess Sopdet, representing the star Sirius. According to the Pyramid Texts, Horus-Sopdu, a combination of Sopdu and the greater sky god Horus, is the offspring of Osiris-Sah and Isis-Sopdet. He was said, in the Pyramid Texts, to protect the teeth of the deceased pharaoh.