Yahoo Corporate Office Headquarters HQ:
701 First Avenue
Sunnyvale, California 94089 USA
Corporate Phone Number: 1-408-349-3300
Fax Number: 1-408-349-3301
Stock Symbol: YHOO
Yahoo is famous for internet search, portal sites and internet advertising. Yahoo one of the world's premier internet companies. Yahoo's Customer Service Phone Number is 1-866-562-7219 . Also, they do offer technical support and help through forums, email and the internet.