Mackenzie Horton is a swimmer who competed for Australia. He competed at the 2016 Summer Olympic Games. By winning the gold medal in the 400 metres freestyle at the 2016 Olympic Games, he became the first male swimmer from the province of Victoria to win a gold medal at the Olympics.
|2016||Men's 400m freestyle|
|Men's 1500m freestyle||5th|
|Men's 4x200m freestyle relay||4th|
|400 metres freestyle||Heats||3:43.84|
|1500 metres freestyle||Heats||14:48.47|
|4x200 metres freestyle relay||Heats||7:07.98|