Emma Margaret Tachard-Mackey (born 4 January 1996) is a French-British actress. She is best known for her role as Maeve Wiley in the Netflix original series Sex Education

Emma Tachard-Mackey was born in Le Mans, France, to a French father and a British mother. Her father, Philippe, is a headmaster. Her mother, Rachel, is a volunteer at a charity. She grew up in Sablé-sur-Sarthe and received her Baccalauréat in 2013. She moved to the United Kingdom at age 17, and later attended the University of Leeds.

Mackey stars alongside Asa Butterfield, Gillian Anderson and Ncuti Gatwa in the Netflix comedy-drama series Sex Education. Her character in Sex Education, Maeve Wiley, is a quick witted and business-savvy "bad girl" who convinces a fellow student to start an underground sex therapy business at their school. Sex Education is Mackey's first major television series. She has received positive critical reception for her performance.