Kaitlyn Rochelle Dever (December 21, 1996) is an American actress. She became known for her roles in series such as Justified (2011–2015), Last Man Standing (2011–2021), Unbelievable (2019), and Dopesick (2021). She earned Golden Globe Award nominations for Unbelievable and Dopesick, in addition to a Primetime Emmy Award nomination for Dopesick. Dever has had supporting roles in the films Bad Teacher (2011), The Spectacular Now (2013), Short Term 12 (2013), Detroit (2017), Beautiful Boy (2018), Dear Evan Hansen (2021), and Ticket to Paradise (2022). Her leading film roles were in Them That Follow (2019), Booksmart (2019), Rosaline (2022), and No One Will Save You (2023).