Laura Birn (born 25 April 1981 in Helsinki, Finland) is a Finnish film actress.
She is most famous for her appearances in the 2003 film Helmiä ja sikoja alongside Mikko Leppilampi and most notably in her role in the 2005 film Lupaus. In the United States, she is best known for her supporting role in the Finnish film Joulutarina (English title: Christmas Story).
She is proficient in Finnish, English and Portuguese.
Her performance in Purge earned her a nomination for a Satellite Award for Best Actress.