Thomas N. Wiesner (February 28, 1939 – June 25, 2002), also known by his nickname "Big Dog", was an American politician and businessman. Wiesner initially played football for the Wisconsin Badgers from 1959 to 1961, before moving to Las Vegas in 1963. Seven years later, at the age of 31, he became the youngest person to be elected to the Clark County Commission. Wiesner served two terms before losing re-election in 1978. Wiesner was also an owner of the Marina Hotel, which later became the MGM Grand resort.