Thomasin "Tom" McKenzie (born 2000) is a New Zealand teen actress. Most well known for playing Pixie Hannah in Shortland Street, she has also starred in The Hobbit: The Battle of the Five Armies as Astrid, in Lucy Lewis Can't Lose as Lucy Lewis, and in webseries Bright Summer Night as Petra Quince. She will also have a leading role in upcoming American film My Abandonment.
Born to actress Miranda Harcourt and director Stuart McKenzie, McKenzie currently lives in Wellington. She attends Samuel Marsden Collegiate School, where she is in her penultimate year.