In Mesopotamian mythology, Lahamu and Lahmu are twin deities, the first gods to be born from the chaos that was created by the merging of Apsu and Tiamat.
Lahamu was the first-born daughter of Tiamat (the personification of the salt waters) and Apsu (the watery deep beneath the earth) in Akkadian mythology. With her twin brother Lahmu she is the mother of Anshar and Kishar, who were in turn parents of the first gods. She and her brother/husband are never mentioned separately.
The birth of the twin deities is described in the Babylonian mythological text Enuma elish (c. 12th century bc). Lahmu and Lahamu were rather vague deities who do not seem to have played any significant part in subsequent myths, although they may have been the progenitors of Anshar and Kishar.
Usually, Lahmu and Lahamu represent the silt of the sea-bed, the twin horizons of sky and earth. Because the wavy line of a gliding snake is similar to the ripple of water, Lahamu is sometimes seen as a serpent, and sometimes as a woman with a red sash and six curls on her head.