Rebecca Louisa Ferguson Sundström (born 19 October 1983) is a Swedish actress. She began her acting career with the Swedish soap opera Nya tider (1999–2000) and went on to star in the slasher film Drowning Ghost (2004). She came to international prominence with her portrayal of Elizabeth Woodville in the British television miniseries The White Queen (2013), for which she was nominated for a Golden Globe for Best Actress in a Miniseries or Television Film.

Ferguson starred as MI6 agent Ilsa Faust in the action spy film Mission: Impossible – Rogue Nation (2015) and its sequel Mission: Impossible – Fallout (2018), both with Tom Cruise. She played Jenny Lind in the musical film The Greatest Showman (2017), starred in the horror films Life (2017) and Doctor Sleep (2019), and had supporting parts in the comedy-drama Florence Foster Jenkins (2016), the mystery thriller The Girl on the Train (2016), and the science fiction films Men in Black: International (2019) and Dune (2021).

Early life
Ferguson was born in Stockholm and grew up in the Vasastan district in central Stockholm. Her mother, Rosemary Ferguson, is English, and moved from Britain to Sweden at the age of 25. Her father is Swedish. Her maternal grandmother is Northern Irish, and her maternal grandfather is Scottish. Ferguson took her mother's surname as her stage name.

She attended an English-medium school in Sweden and was raised bilingual, speaking Swedish and English. Ferguson attended the Adolf Fredrik's Music School in Stockholm and graduated in 1999.

From the age of 13, she worked as a model and appeared in magazines and on television commercials for cosmetic, apparel, and jewellery advertisements. Ferguson has danced from a very early age; she danced ballet, tap-dancing, jazz, street funk and tango. She taught Argentine tango at a dance company in Lund, Sweden for a few years while she continued her work on several short art film projects. Unsure if she wanted to act, Ferguson had other jobs, such as working at a daycare centre, as a nanny, at a jewellery shop, at a shoe shop and at a Korean restaurant.