The Babylonians came very close to the concept, in their base-60 numerical system, but the zero was first named and incorporated into a mathematical system by the Hindus:
http://www.en.wikipedia.org/wiki/0_%28number%29
103 posted on 05/09/2006 11:00:00 AM PDT by MoJoWork_n
113 posted on 05/09/2006 11:14:36 AM PDT by rageaholic