What is Barry Williams' net worth? Barry Williams' net worth is $4 million dollars. Born in Santa Monica, California, Barry Williams began acting as a child, guest starring on multiple television shows including, "Dragnet", "The Invaders", "Mission: Impossible", and "The Mod Squad". In 1969, he was cast in the role that would make him famous as Greg Brady, the oldest sibling in "The Brady Bunch". The success of the show would prove to be both a blessing and a curse. After the run of "The Brady Bunch" ended in 1974, he began working in musical theater, touring with productions of "Grease", "The Sound of Music", and "West Side Story", as well as appearing on Broadway in "Romance/Romance". He has continued to work on television, appearing in guest starring and supporting roles in such shows as "Three's Company", "Highway to Heaven", "General Hospital", "Hollywood 7", "That '70s Show", and various "Brady Bunch" specials, including a short-lived television series called, "The Bradys".