Sonya Cassidy (born 5 March 1987) is a British actress. Her credits include The Tudors (2009), The Paradise (2012), Vera (2012âÂÂ2014), The Great Fire (2014), Survivor (2015), Olympus (2015), Humans (2016), The Woman in White (2018), Lodge 49 (2019), The Last Kingdom (2022), The Man Who Fell to Earth (2022), The Hunt For Raoul Moat (2023), and season 3 of Reacher (2025).
Cassidy attended RADA, graduating with a BA degree in Acting Degree (H Level) in 2008. In 2012, she played Clara in the BBC period drama The Paradise, as Celine Ashworth in the police detective series Vera, and as the Oracle in Syfy fantasy series Olympus. In 2016, she played industrial synth Hester in the Channel 4 science-fiction series Humans, alongside Gemma Chan and Colin Morgan.
Cassidy starred in the AMC television series Lodge 49. She also has some film appearances and has also done theatre work.
In 2022, she starred in the science-fiction series The Man Who Fell to Earth, a television adaptation of the 1963 novel of the same name by Walter Tevis.
Cassidy achieved a black belt in Taekwondo.