There were some I couldn't choose between, so..

Aries: Horus, God of War

Taurus: Geb, god of Earth

Gemini: Hathor, goddess of joy and music (Well what are the odds..)

Cancer: Khonsu, God of the moon

Leo: Sekhmet, Goddess of Vengeance
Ra, god of the sun

Virgo: Isis, goddess of magic
Thoth, God of Knowledge

Libra: Bastet, goddess of cats and protection,
Ma'at, goddess of Justice

Scorpio: Serquet, goddess of scorpions
(oh so original, I know. At least I didn't put Seth the god of evil)

Sagittarius: Seth, god of evil (..And there it is)
Neith, goddess of weaving

Capricorn: Osiris, god of the dead and afterlife or
Anubis, god of funerals

Aquarius: Shou, God of Air
Nut, goddess of the sky

Pisces: Nephythys, goddess of death and rivers