Logan Lerman as Percy Jackson

Logan Wade Lerman (born January 19, 1992) is an American actor, best known for playing the title character in the 2010 fantasy-adventure Percy Jackson & the Olympians: The Lightning Thief. Lerman began appearing in commercials in the mid 1990s, moving to work in feature films and television in the early 2000s, when he starred in the series Jack & Bobby (2004–2005) and the movies The Butterfly Effect (2004) and Hoot (2006). He gained further recognition for his roles in the western 3:10 to Yuma, the thriller The Number 23, the comedy Meet Bill, as well as for his work in the 2009 films Gamer and My One and Only. Lerman will play d'Artagnan in a 2011 cinematic version of The Three Musketeers, and has signed to star in an adaptation of the novel The Perks of Being a Wallflower.Lerman was born in Beverly Hills, California.

His mother, Lisa (née Goldman), works as his manager, and his father, Larry Lerman, is a businessman. He has two siblings, Lindsey and Lucas, and graduated from Beverly Hills High. Lerman is Jewish and grew up in a "stable family background". Most of his relatives work in the medical profession. His family owns and operates the orthotics and prosthetics company Lerman & Son, which is managed by his paternal grandparents, Mina (Schwartz) and Max Lerman, and had been founded by his great-grandfather, Jacob Lerman, in 1915. His maternal grandmother's father was president of the B'nai B'rith lodge in Los Feliz, California. Lerman is a self-described "film geek", having stated that he is "shaped by movies". He has expressed an interest in being involved in "everything that goes into making a film", including wanting to write, produce, and direct; in 2010, he applied to study creative writing at New York University, but has postponed his attendance. His favorite directors include Wes Anderson, Stanley Kubrick, David Fincher and Peter Bogdanovich, and he has cited American Beauty, Defending Your Life, and Eternal Sunshine of the Spotless Mind as being among his favorite films. Lerman has stated that he had a passion for movies from a young age. He appeared in commercials in the 1990s, and subsequently made his film debut in 2000's The Patriot, playing William Martin, one of the children of Mel Gibson's character. The same year, he co-starred with Gibson again in What Women Want, playing Gibson's character as a child. Lerman's next feature film roles were in 2001's Riding in Cars with Boys and the 2004 thriller The Butterfly Effect, portraying younger versions of characters played by Adam Garcia (in the former film) and Ashton Kutcher (in the latter).

Lerman's role in the 2003 made-for-television film A Painted House won him a Young Artist Award for Best Performance by a Leading Young Actor in a television production. In 2004, he was cast in the television series, Jack & Bobby, playing the title role of Robert "Bobby" McCallister, who was destined to become President of the United States. The show ran on The WB Television Network during the 2004–2005 season, and was subsequently canceled, though Lerman won another Young Artist Award for his performance. Continuing his film work, Lerman played the lead role of Roy Eberhardt in the children's adventure Hoot. The film opened on May 5, 2006, and won him a third Young Artist Award, this time for Best Performance in a Feature Film - Leading Young Actor (2007). In 2007, Lerman appeared in The Number 23, in which he played Robin Sparrow, the son of Jim Carrey's character, Walter Sparrow. That year, he also appeared in the critically-acclaimed western 3:10 to Yuma, where he played William Evans, the son of Christian Bale's character; Lerman received positive reviews his role, and was again nominated for the Young Artist Award - Best Performance in a Feature Film - Leading Young Actor (2008). It was the second consecutive year he received a nomination in that category, although this time he did not win. In 2008, Lerman co-starred in Meet Bill as The Kid (his character is never referred to by name), and in 2009, he appeared in the science fiction film Gamer as Simon, a teenage gamer who controls one of the characters in a video game played with live human subjects. Also that year, Lerman had a leading role in the Renée Zellweger comedy feature My One and Only, playing a teenage version of George Hamilton - an aspiring writer who, after his parents abruptly split, accompanies his mother and brother on a cross-country trip, eventually arriving in Hollywood.

Lerman played Percy Jackson in the 2010 film Percy Jackson & the Olympians: The Lightning Thief, based on the book by Rick Riordan. He was not familiar with the book series when he received the script for the film. Regarding the similarities between Lerman's character and Harry Potter, Lerman told an interviewer: "Honestly, my character doesn't have much in common with Harry Potter besides the fact that he's an unlikely hero who's thrown into a huge situation". Lerman is signed to appear in two more Percy Jackson films, and has stated that he would like to star in adaptations of all five books in the series. Also in 2010, Lerman appeared in "Change the Odds", a public service announcement video for the Stand Up to Cancer charity; the video also featured Dakota Fanning, Zac Efron, Andrew Garfield, and other actors. Lerman is represented by the Creative Artists Agency. He will play d'Artagnan in director Paul W. S. Anderson's 3D film version of The Three Musketeers, which was filmed from August 2010 to November 2010, and is scheduled for release on October 14, 2011. Lerman was cast in the role without having to audition, and wore hair extensions to portray his character. He will also star in a film adaptation of Stephen Chbosky's novel The Perks of Being a Wallflower, playing the lead role, Charlie; filming is scheduled to begin in the summer of 2011. Lerman is a friend of actor Dean Collins, who played his best friend on Jack & Bobby; they remained close after the series' cancellation, and worked together again on Hoot, where Collins had a supporting role. In their spare time, the two collaborated on comedic short films. As well as acting, they wrote, directed, and shot the videos, often enlisting the help of family and friends. The shorts were uploaded to YouTube under the joint account name of "monkeynuts1069". In 2006, Collins and Lerman formed a band, Indigo, along with musician Daniel Pashman; Collins sings lead vocals, Lerman plays keyboard and guitar, and Pashman plays the drums. Lerman also plays the piano.