McKenna Grantier, born in Virginia, is a theatre, commercial, and film actress. She attended The College of William and Mary in Williamsburg, Virginia, where she received a Bachelor's degree in Theatre. She also attended the Stella Adler Conservatory for Acting in the summer of 2023. McKenna began her acting career on the stage and has appeared in several productions, including The King and I, Company, A Midsummer Night's Dream, and Bright Star. She has been in a number of independent films and series, such as Dinner by Breakfast (2023) and Saudade (2025). McKenna currently lives in Toronto, Canada, and works closely with Canadian independent movie production group 512RED.