Tara-Lynne O'Neill (born 16 November 1975) is a film, theatre and television actress from Northern Ireland. During her childhood, she aspired to become a dentist, but abandoned this after failing her General Certificate of Secondary Education in chemistry.

At sixth-form college, she opted for a career in acting. O'Neill started work as a television presenter on Saturday Disney from 1993 to 1996. She was also a main presenter on The Over the Wall Gang, a young people's television show from BBC Northern Ireland O'Neill also appeared in film roles such as the town's seductress in The Most Fertile Man in Ireland (1999), and as Claire McKee in Wild About Harry (2000).