Sir Conrad Marshall John Fisher Swan KCVO FSA (13 May 1924–10 January 2019) was a long-serving officer of arms at the College of Arms in London. Having been first appointed to work at the College in 1962, he rose to the office of Garter Principal King of Arms in 1992, a position he held until 1995. He was the first Canadian ever to be appointed to the College of Arms.