Ruby Leilani N. Ashbourne Serkis (born October 11, 1998) is an English actress.

Ashbourne Serkis was born in Hackney, East London, to actors Andy Serkis and Lorraine Ashbourne and grew up in North London with her younger brothers Sonny and Louis. She attended the City of London School for Girls. Ashbourne Serkis began her career with small cameos before landing a titular role in the 2015 BBC One television film adaptation of Laurie Lee's memoir Cider with Rosie, for which she received critical acclaim.