For Disney, she appeared as herself in a cameo dancing during the Dance of the Sugar Plums skit with The Mutations in Dublin, Ireland in the 2014 film, Muppets Most Wanted. She also voiced Arrietty in the UK dub of The Secret World of Arrietty.
- Ronan was considered to portray Cinderella in the 2015 live-action adaptation of the 1950 animated film before Lily James was cast.
- Ronan was shortlisted for the role of Rey in Star Wars: The Force Awakens, before Daisy Ridley was cast.
- She was considered to play Scarlet Witch in the Marvel Cinematic Universe, but Elizabeth Olsen was cast instead.