Marie Westbrook is an American voice actress known for her work in anime dubbing, video games, and live-action dubbing. She was born in Kellogg, Idaho, and was raised in Soda Springs, Idaho. Her early involvement included dance and gymnastics from the age of seven. She initially attended Utah State University as a dance major before changing her academic path and graduating with a degree in physics and chemistry education. Following her graduation, she worked as a science teacher for eighth-grade students before deciding to pursue acting professionally. She moved to Los Angeles in the fall of 2005 to focus on an acting career. Prior to focusing on voice acting, Westbrook appeared in several live-action independent films, including titles such as Paradise, Evil Angel, and Titanic II.

Westbrook's career in anime dubbing has included a variety of prominent roles. She is recognized for voicing the special grade cursed spirit Hanami in the popular series Jujutsu Kaisen. She provided the voice for the character Dorio in the critically acclaimed Cyberpunk: Edgerunners. In the Baki Hanma series, she voiced the character Maria. Her other anime credits include Kuroko Usami in Orient, Ikumi Unagiya and Tokie Tonokawa in Bleach: Thousand-Year Blood War, and Kouyou Ozaki in Bungo Stray Dogs Wan!. She has also been credited with additional voices in series such as Shironeko Project: Zero Chronicle and has a role in the 2025 anime series Moonrise.

Her voice work extends to the video game industry. She has voiced characters in games including Shadowverse, where she portrayed Pluto, Brazen Demoness, and Moriana the Bejeweled, and in MapleStory 2, where she voiced Frankenette, Jayce, and Arita. In addition to her anime and video game work, Westbrook has a substantial body of work in English dubs of international live-action television series and films. Her dubbing credits include roles in series such as Monarca, The Gift, Open Your Eyes, Feria: The Darkest Light, Welcome to Eden, and King of Stonks, as well as films like The Marriage App and Hard Feelings.

Westbrook is based in Los Angeles and works with several dubbing studios, including Studiopolis, Bang Zoom! Studios, Roundabout Entertainment, and VSI Los Angeles. She is recognized for her vocal contributions to a range of characters in both anime and international live-action productions.