Rebecca Ferguson was born Rebecca Louisa Ferguson Sundström in Stockholm, Sweden, and grew up in its Vasastaden district. Her father is Swedish. Her mother, Rosemary Ferguson, is British, of Scottish and Northern Irish descent, and moved to Sweden at the age of 25. Rebecca attended an English-speaking school in Sweden and was raised bilingual, speaking Swedish and English. As a student, she attended the Adolf Fredrik's Music School in Stockholm and graduated in 1999.