Joey Lynn King (জোয়ি লিন কিং) is an American actress. She starred as Ramona Quimby in the comedy film Ramona and Beezus (2010) and gained wider recognition for her lead role as a late-blooming teenager in The Kissing Booth film series (2018–2021). King received critical acclaim for playing Gypsy-Rose Blanchard in the crime drama series The Act (2019), for which she was nominated for a Primetime Emmy Award and a Golden Globe Award.

King has also appeared in the films Battle: Los Angeles (2011), Crazy, Stupid, Love (2011), The Dark Knight Rises (2012), The Conjuring (2013), White House Down (2013), Independence Day: Resurgence (2016), and Going in Style (2017), as well as in the FX black comedy series Fargo (2014–2015). She has since taken on lead roles in the action films Bullet Train (2022) and The Princess (2022), the romantic comedy A Family Affair (2024), and performed a voice role in Despicable Me 4 (2024).

King was born in Los Angeles to Terry and Jamie King on July 30, 1999. She has two older sisters, one of whom is actress Hunter King. Her mother is of Jewish descent. King has said, "I'm Jewish, but I'm not really, really religious."

As a child, she sang a cappella for a talent show at the Simi Valley Cultural Arts Center and performed with the Stage Door Children's Theatre in Agoura. King attended Phoenix Ranch School in Simi Valley. King began acting professionally at the age of four in a commercial for Life Cereal. She has also been in commercials for AT&T, Kay Jewelers, and Eggo.

King voiced the yellow fur ball Katie in the animated feature Horton Hears a Who! (2008). She also appeared in Quarantine (2008). In 2010, she guest-starred in the series Ghost Whisperer. She was also featured in The Suite Life of Zack & Cody as Emily Mason in two episodes. Other television appearances include Jericho, Entourage, CSI: Crime Scene Investigation, Medium and Life in Pieces.

King's first lead role was Ramona Quimby in the 2010 film Ramona and Beezus, an adaptation of the Beverly Cleary book series. She also released a single for the movie called "Ramona Blue." Her role in the film won her a Young Artist Award. King was featured in Battle: Los Angeles, where she played a girl named Kirsten. Also in 2011, she co-starred in Crazy, Stupid, Love. She also appeared in Taylor Swift's "Mean" music video as a young student at the school cafeteria rejected by her peers.

King had a role in Christopher Nolan's third Batman film, The Dark Knight Rises (2012), as a young Talia al Ghul. She also filmed the short-lived comedy series Bent, had guest appearances in New Girl, and was on the final episode of The Haunting Hour: The Series, "Goodwill Towards Men". In 2013, King appeared in Oz the Great and Powerful, Family Weekend, White House Down, and The Conjuring. In 2014, she appeared in Wish I Was Here, as well as in Fargo as Greta Grimly, daughter of police officer Gus Grimly. In 2016, King was cast in the coming-of-age drama film The Possibility of Fireflies. She played the lead character Clare in the 2017 horror-thriller film Wish Upon. She also had a role in the supernatural horror film Slender Man, which was released in 2018.