Mackenzie Arnold is a professional footballer from AUS and is currently 33 years old. He is on the books of Portland Thorns FC Women and wears shirt number 18. At international level, he features for Australia Women. His main role on the pitch is Goalkeeper. He measures 181cm in height and weighs 76kg.

His latest transfer saw him join West Ham United Women from Brisbane Roar Women via Free on 2020-07-01.

In the United States Women's National Soccer League 2025, Mackenzie Arnold played 23 matches, averaging 0 interceptions, 0 tackles, and 0.9 clearances per game.