Tatiana Gabrielle Maslany (born September 22, 1985) is a Canadian actress. She has starred in television series such as The Nativity, Being Erica, Heartland, and Orphan Black. In 2013, she won an ACTRA for her role as Claire in the film Picture Day, and a Phillip Borsos Award for her performance in the film Cas & Dylan. Other notable films starring Maslany are Diary of the Dead and Eastern Promises, the latter of which she narrated.

Maslany is currently the lead of the hit Canadian science fiction thriller series Orphan Black, for which she has received widespread critical acclaim, winning two Critics' Choice Television Awards, a TCA Award, and two Canadian Screen Awards, and receiving Emmy, Golden Globe and SAG nominations.