Agnes O'Casey is an English-Irish actress born in London as Agnes Eustacia Kenig. She is the great-granddaughter of renowned Irish playwright Seán O'Casey, whose surname she adopted professionally. After graduating from Dublin's Lir Academy in 2020, she made her television debut as Vivien Epstein in the BBC drama Ridley Road. She later appeared in Dangerous Liaisons and joined the cast of Apple TV+'s Star City. Her film credits include The Miracle Club, Lies We Tell and Small Things Like These. O'Casey received Irish Film and Television Award nominations for her performances in The Miracle Club and Lies We Tell and was named one of Screen International's Stars of Tomorrow in 2024.
Known For
Credits
Cast Credits
Star City (2026)
Starring as Irina Morozova
(8 episodes)
- Episode 1x08: The Wolves (Jul 10, 2026)
- Episode 1x07: Plow Deep (Jul 3, 2026)
- Episode 1x06: Awl in a Sack (Jun 26, 2026)
- Episode 1x05: Bite Your Elbow (Jun 19, 2026)
- Episode 1x04: Dark Forest (Jun 12, 2026)
- Episode 1x03: Bad Dancer (Jun 5, 2026)
- Episode 1x02: A Bear on a Chain (May 29, 2026)
- Episode 1x01: The Eyes (May 29, 2026)
Black Doves (2024)
Guest starring as Dani
(4 episodes)
- Episode 1x05: The Cost of It All (Dec 5, 2024)
- Episode 1x04: Go Bang Time (Dec 5, 2024)
- Episode 1x03: The Coming Night (Dec 5, 2024)
- Episode 1x01: To Love Then (Dec 5, 2024)
Dangerous Liaisons (2022)
Starring as Emilie de Sevigny
(3 episodes)
- Episode 1x05: The World Should Be Afraid of Us (Dec 4, 2022)
- Episode 1x04: You Don't Know Me (Nov 27, 2022)
- Episode 1x03: Even God Does Not Forgive (Nov 20, 2022)
Wolf Hall (2015)
Starring as Meg Douglas
(2 episodes)
Guest starring as Meg Douglas
- Episode 2x06: Light (Dec 15, 2024)