William Yaw Obeng (born April 14, 1983) is a former American football offensive lineman of the Arena Football League. He was signed by the Minnesota Vikings as an undrafted free agent in 2005. He played college football at San Jose State.Obeng was also a member of the Oakland Raiders, San Jose SaberCats and Arizona Rattlers.Before San Jose State, Obeng attended Mesabi Range Community and Technical College.