Egyptian

 

Water: Hapi (Nile God) Tefnut (goddess of moisture, dew and rain)

 

Ground: Geb (god of the earth, Neper (god of the grain),  

 

Air: Shu (god of the air), Hather (sky goddess/cow), Nut (sky goddess, daughter of Shu), Baal (sky and storm god), 

 

Fire: (hawk as a symbol of the rising sun), Ra (creator sun god), Montu (a god of war and the sun), 

 

 

Egyptians also don't have many deities specific to elements, although they do have many animalistic gods which embody that particular animal. I thought I would take advantage of this and choose Tefnut as my water deity, as she is frequently depicted as a woman with a lion's head.