Marie Avgeropoulos (/ævdʒɛrɔːˈpuːlɔːs/; born June 17, 1986) is a Canadian actress and model with Greek ancestry. Her break-out role was as Valli Wooley in the 2009 film I Love You, Beth Cooper directed by Chris Columbus.

Since then, she has appeared in more film and TV roles: as Kirstie in Cult, as Kim Rhodes in Hunt to Kill, and the sci-fi series The 100 as Octavia Blake. After studying broadcast journalism for two years in her hometown, Avgeropoulos moved to Europe. Several months later, she came back to Canada and settled in Vancouver.