Gerald P. Marciniak (born March 30, 1937) is a retired Canadian Football League player. Marciniak was raised in Chicago and played football for Mount Carmel High School. He was the co-captain of Mount Carmel's 1954 football team that won the Chicago Catholic League championship and then lost in the city championship game. After graduating from high school, Marciniak attended the University of Michigan starting in 1955. He played college football at the tackle for the 1957 and 1958 Michigan Wolverines football teams. He later played for the Saskatchewan Roughriders during the 1959 season.