Fiona Shaw is an Irish actress and theatre director, known for her exceptional versatility and the intensity of her performances. Her career is deeply rooted in classical theatre, where she has collaborated extensively with institutions such as the Royal Shakespeare Company and the National Theatre, delivering acclaimed performances in roles such as Medea, Electra, and a memorable male portrayal of Richard II. She achieved international fame through film and television roles, notably as Petunia Dursley in the *Harry Potter* saga and the spy Carolyn Martens in the series *Killing Eve*. Her filmography also includes appearances in *True Blood* and *Andor*. Throughout her career, she has received numerous accolades, including two Laurence Olivier Awards for theatre and a BAFTA TV Award for *Killing Eve*, as well as nominations for Tony and Emmy Awards. She was also appointed an honorary Commander of the Order of the British Empire (CBE).