Emma Margaret Marie Tachard-Mackey (born 4 January 1996) is a French-born British actress. Her breakthrough performance as Maeve Wiley, a sardonic teenager, in the Netflix comedy-drama series Sex Education (2019–present), earned her a British Academy Television Award nomination. She has since starred in the mystery film Death on the Nile (2022) and in the drama film Emily (2022). Her portrayal of writer Emily Brontë in the latter earned her two British Independent Film Award nominations, and the BAFTA Rising Star Award.

Early life
Tachard-Mackey was born in Le Mans, the daughter of a French father and an English mother. Her father is a school headmaster. She grew up in Sablé-sur-Sarthe and received her baccalauréat in 2013 with High Honours in l'académie de Nantes, a French school district, subsequently moving to England to study English language and literature at the University of Leeds. She graduated in 2016. Mackey lives in London as a dual French-British citizen.