Finn Wolfhard was born in Vancouver, British Columbia, Canada. His family is of French, German, and Jewish descent.
Finn got his first acting job from Craigslist. He mostly starred in the Netflix series, Stranger Things, and TV franchises, like The 100 and Supernatural. In 2017, he played Richie Tozier in It, but when the original director, Cary Fukunaga, left because of creative differences, Finn went back to Stranger Things. However, when Andy Muschietti took over as director, Wolfhard had to re-audition for the role of Richie.
In addition to acting, Finn Wolfhard is also the lead vocalist and guitarist, and also songwriter, for the Vancouver-based rock band Calpurnia. They are signed to Royal Mountain Records in the United States and Canada, and Transgressive Records and its imprint, paradYse, for Europe and the United Kingdom.