Zac Reid (born 28 January 2000) is a New Zealand swimmer. He competed in the men's 400 metre freestyle at the 2019 World Aquatics Championships, and the 2020 Summer Olympics. At the games, Reid won his heat in the Men's 800m free, breaking his own New Zealand record in the process and finishing 18th out of 34.  He also competed in the 400m free, where he placed 23 out of 36.
