John MacKenzie was a Scottish professional footballer known for his role as a defender. He played primarily in the early 20th century, representing clubs such as Aberdeen and Dunfermline Athletic. His career spanned several years, during which he made significant contributions to his teams. MacKenzie was recognized for his strong defensive skills and leadership on the field. He was part of the Scottish Football League, which is one of the oldest football leagues in the world. His legacy remains a part of the history of Scottish football, reflecting the sport's development during that era.