Scodelario's father was English and her mother is Brazilian, of Italian and Portuguese descent.
Kaya Scodelario was born as Kaya Rose Humphrey in Haywards Heath, West Sussex, in England, on 13 March 1992. Her mother, Katia Scodelario, is a Brazilian from Itu, São Paulo, who moved to England in 1990; Scodelario's surname comes from her mother's Italian grandfather. Her father, Roger Humphrey (died 22 November 2010), was British. Her surname comes from her mother's Italian grandfather. Thanks to her mother, Kaya grew up fluent in Brazilian Portuguese, as well as English. Scodelario does not speak a word English with her mother. Both are only conversing in Portuguese, which is her mother's native language. Her parents divorced when she was still very young. She was, therefore, raised by her mother, whose surname she eventually adopted.