The new deal extends its partnership to cover the London 2012 Games.
Omega - official timekeeper for the Beijing 2008 and Vancouver 2010 Games - brings to six the number of worldwide partners who have already committed to the London 2012 Olympic Games.
IOC Marketing Commission chairman Gerhard Heiberg said: “We currently have 12 worldwide partners for the Beijing 2008 Olympic Games, and six of those have extended to Vancouver 2010 and London 2012.
“The knowledge and expertise our partners bring to an organising committee is invaluable, especially our technology partners such as Omega.”
Worldwide partners confirmed for Vancouver 2010 and London 2012 are: Coca-Cola, Atos Origin, GE, McDonalds, Omega and Visa.
