Nathalie Armin is a British actress. She has appeared in a number of stage productions. On television she is known for her roles in the BBC Three comedy series "Juice" (2023) and the BBC One drama series "Showtrial" (2024). Nathalie Armin was born into an Iranian family. She trained at the Royal Central School of Speech and Drama. Armin appeared in David Hare's "The Permanent Way" and in the acclaimed 2015 production of Stephen Adly Guirgis's "The Motherfucker with the Hat", both at the Royal National Theatre. In her review of Steve Waters's 2017 play "Limehouse" at the Donmar Warehouse in the Evening Standard, critic Fiona Mountford praised Armin, calling her "one of the country's best little-known stage actresses". Armin later appeared alongside Juliet Stevenson in the original production of Robert Icke's critically acclaimed play "The Doctor" at the Almeida Theatre, and in 2023 she played the lead role in the English premiere of Hanya Yanagihara's "A Little Life", directed by Ivo van Hove.

Armin's filmography includes such works as Peter Morgan's "The Lost Honour of Christopher Jefferies", the award-winning C4 comedy-drama "Home", and the critically acclaimed television adaptation of Anthony Horowitz's novel "Magpie Murders". In 2023 she appeared as a series regular in Mawaan Rizwan's comedy "Juice" on BBC Three, and in 2024 she played a leading role in the second season of the BBC drama series "Showtrial" alongside Adeel Akhtar.