Emily Roya O'Brien is an English three-time Daytime Emmy-nominated actress and writer who is known for her role of Jana Hawkes Fisher on The Young and the Restless from 2006 to 2011.

She also portrayed Julia in the 2014 film Pernicious and provided the voices of Camille and Samira in League of Legends, and Y'shtola in Final Fantasy XIV: A Realm Reborn.

In 2020, O'Brien joined the cast of Days of Our Lives and currently portrays the character Gwen Rizczech, the daughter of Jack Deveraux (Matthew Ashford) on the daytime drama.

She attended Guildhall School of Music and Drama in London, England and wrote, produced and directed her first project Beatrice in 2011 which won best film at BIFF.

O'Brien portrayed the role initially on a recurring status from 11 May to 5 September 2006,[2] and then on contract from 10 October 2006 to 20 February 2007,[3] when the character disappeared from the canvas temporarily until her return on 15 June 2007.

[13] She also appeared as the suspicious Portia in the thriller Dangerous Matrimony, then signed on to play the voice of Ruth the human mother and wife of the Ambassador of Earth in the upcoming dark fantasy motion comic Dagon Troll World Chronicles that is set to be released in 2021.

[16] In November 2024, it was announced O'Brien would return to play her iconic character Theresa in March 2025, before reprising her role Gwen Rizczech in July 2025 on Days of Our Lives.