Brian Clark (born July 4, 1947) is a Canadian businessman and survivor of the attacks on the World Trade Center on September 11, 2001.
Clark worked for the American international brokerage firm Euro Brokers, which lost 61 employees that day, nearly one fifth of its New York branch.Clark was one of only four people in the South Tower to escape from a floor above the plane's impact, escaping from his office on the 84th floor.
No one escaped above the impact point in the North Tower.
Clark's testimony before the 9/11 Commission, where he detailed problems with the 911 emergency call system, has been widely quoted.