Helena Mattsson (born 30 March 1984) is a Swedish actress living and working in Hollywood. Mattsson was born and raised in Stockholm, Sweden, had roles early on in Wild Side Story and other cabarets there, and moved at a young age to London, England, to attend theatre school. When she was 19 years old she moved to Hollywood where she has since stayed. Her first role was in a short-lived TV series called Sweden, Ohio in 2004. In 2007 she starred in Species: The Awakening,and has been cast in the film You and I.Mattsson also appeared in the music video of Primal Scream's "Country Girl" in 2006.She appeared in the Touchstone Pictures film Surrogates and also in three episodes of the ABC series Desperate Housewives as Irina and in three episodes of Nikita as Cassandra Ovechkin. She played Alexis Blume in the TV series 666 Park Avenue.

Urodziła się i wychowała w Sztokholmie w Szwecji. Występowała na scenie w Wild Side Story. W młodym wieku przeniosła się do Londynu, by zacząć uczęszczać do szkoły teatralnej. Kiedy miała 19 lat przeprowadziła się do Hollywood. W 2007 roku zagrała główną rolę w filmie Gatunek 4: Przebudzenie. Rok później pojawiła się u boku Mischy Barton w filmie You and I. Wystąpiła również w teledysku grupy Primal Scream Country Girl. W 2009 zagrała w filmie Surogaci. W 2010 roku dołączyła do obsady serialu Gotowe na wszystko, gdzie zagrała Rosjankę Irinę.

Helena Mattsson (Estocolmo, 30 de Março de 1984) é uma atriz sueca que atualmente vive e trabalha em Hollywood.

Mattsson cresceu em Estocolmo,mas ainda jovem se mudou para Londres, Inglaterra, onde teve aulas em uma escola de teatro. Aos 19 anos de idade ela se mudou para Hollywood, nos Estados Unidos da América, onde ainda reside. Em 2007 ela estrelou o filme A Experiência 4: O Despertar, e foi escolhida para o elenco do filme Você e Eu (2008). Mattsson também apareceu no vídeo musical Country Girl, da banda escocesa de rock alternativo Primal Scream, em 2006. Ela também faz parte do elenco do filme da Disney Substitutos.