Kaitlyn Rochelle Dever is an American actress. She gained recognition for her roles in the FX crime drama series Justified (2011–2015), the ABC/Fox sitcom Last Man Standing (2011–2021), and the Netflix drama miniseries Unbelievable (2019), the last of which earned her a Golden Globe Award nomination for Best Actress – Miniseries.
Dever took on supporting parts in various films, such as Bad Teacher (2011), The Spectacular Now (2013), Short Term 12 (2013), Detroit (2017), and Beautiful Boy (2018). She also had leading roles in the 2019 films Them That Follow and Booksmart.
Dever was born in Phoenix, Arizona, to Tim and Kathy Dever. She has two younger sisters, Mady and Jane Dever. At the age of five, she developed an interest in the performing arts with her parents sending her to an acting school. She also participated in gymnastics, ballet and skating, until she focused on acting. Her family then moved to Dallas when her father was given the role of the voice of Barney the Purple Dinosaur, and where she enrolled at the Dallas Young Actors Studio in a month-long acting program. Honing her acting skills at the studio, she booked a number of commercials, before moving to Los Angeles.