According to his official website his sponsors are:
Accenture (As of December 2009, Accenture has dropped Tiger from their ads)
AT&T
EA Sports
Gatorade Tiger
Gillette
NetJets
Nike Golf
TAG Heuer
Tatweer: The Tiger Woods Dubai
TLC Laser Eye Centers
Upper Deck
Chat with our AI personalities
Tiger Woods became a professional golfer in August 1996, and signed endorsement deals worth $40 million from Nike and $20 million from Titleist.
Nike, he wears head to toe Nike clothing and 13 out of his 14 clubs are Nike. He also uses a Nike ball and bag.