In this research the ideas of the Mesopotamian people with respect to the origin and development of the cosmos, of the gods and of mankind will be studied on the basis of relevant Sumerian myths and other texts and with the aid of the god lists. The texts to be studied date from the beginning of the third millennium down to the Old Babylonian period. Given the length of the period and the change in population in Mesopotamia during this time, a point of specific attention will be possible changes in the conception(s) concerning cosmogony, theogony and anthropogeny. The Mesopotamian ideas will be compared with those of other contemporary peoples in the Ancient Near East. [table “6” not found /]