Rosie Day (born 6 March 1995) is an English actress. She is known for playing Mary Hawkins in the Golden Globe nominated Starz and Sony Pictures TV series Outlander and Sarah Jessica Parker's daughter in the comedy road film All Roads Lead to Rome, which she co-starred in. She also stars as Tina Pemberton in Sky One's Living the Dream alongside Phillip Glenister and Lesley Sharp and the 2018 Lionsgate feature Down a Dark Hall alongside Uma Thurman.