Jared Joseph Leto was born on December 26, 1971, in Bossier City, Louisiana, to Constance Leto (née Metrejon). His mother has Cajun ancestry. “Leto” is the surname of his stepfather. His parents divorced when he was a child, and he and his older brother, Shannon Leto, lived with their mother and their maternal grandparents, Ruby (Russell) and William Lee Metrejon. His father remarried, and committed suicide when Jared was eight. Leto moved frequently with his family from Louisiana to different cities around the country. “My mom’s father was in the Air Force,” Leto has explained, “so moving around a lot was a normal way of life.” Leto has two younger half-brothers from his father’s second marriage.

In 1992, Leto moved to Los Angeles to pursue a career in directing, intending to take acting roles on the side. He found minor roles on television shows but his first break came in 1994, after he was cast opposite Claire Danes as Jordan Catalano, her love interest, in the short-lived but well-reviewed ABC teen drama My So-Called Life. The show was praised for its portrayal of adolescence and gained a strong cult following, despite being canceled after only one season. The same year, he made his television film debut starring alongside Alicia Silverstone in Cool and the Crazy, and landed his first film role in the 1995 drama How to Make an American Quilt. He later co-starred with Christina Ricci in The Last of the High Kings (1996) and got a supporting role in Switchback (1997).

Leto next appeared in the independent film Highway. Set in 1994, Leto is caught with the wife of his employer, a Vegas thug, and flees to Seattle with his best friend Jake Gyllenhaal in the week preceding Kurt Cobain’s suicide. Filming finished in early 2000, but the film was not released until March 2002 on home video formats, although originally scheduled for a theatrical release.

In 1997, Leto starred in the biopic Prefontaine in which he played the role of Olympic hopeful Steve Prefontaine. For the preparation of the role, Leto immersed himself in the runner’s life, training for six weeks and meeting with members of his family and friends. He bore a striking resemblance to the real Prefontaine, also adopting the athlete’s voice and upright running style. His portrayal received positive reviews from critics and is often considered his breakthrough role. Peter Stack of the San Francisco Chronicle noted how Leto played the athlete with raw vitality; “With hypnotic blue eyes and dirty blond hair, Leto captures the rock-star style Prefontaine affected, and he looks natural in fiery performances on the track, as well as off, where Pre affected a brash, confrontational style.”

After landing the lead role of a British aristocrat in the 1998 drama Basil, Leto starred in the horror Urban Legend. The film was poorly received by most movie critics, however, it was a financial success. The same year, Terrence Malick cast Leto for a supporting role in the war film The Thin Red Line alongside Sean Penn and Adrien Brody. It garnered mostly positive reviews and was a moderate success in the box office. It received multiple awards and nominations, including seven Academy Award nominations; Leto shared a Satellite Award with the rest of the cast.

Leto formed the rock band Thirty Seconds to Mars in 1998 in Los Angeles, California with his brother Shannon. When the group first started, Jared Leto did not allow his position of Hollywood actor to be used in promotion of the band. Their debut album had been in the works for a couple of years, with Leto writing the majority of the songs. Their work led to a number of record labels being interested in signing Thirty Seconds to Mars, which eventually signed to Immortal Records.

In 1999, Leto played a gay high school teacher who attracts the attentions of Robert Downey, Jr. in Black and White, and had a supporting role in the drama Girl, Interrupted, an adaptation of the memoir of the same name by Susanna Kaysen. He then portrayed Angel Face in Fight Club (1999), a film adaptation of Chuck Palahniuk’s novel of the same name, directed by David Fincher. He began dating actress Cameron Diaz in 1999 and the couple became engaged in 2000.

During this period Leto focused increasingly on his music career, working with producers Bob Ezrin and Brian Virtue on his band’s debut album 30 Seconds to Mars, which was released on August 27, 2002, in the United States through Immortal and Virgin. It reached number 107 on the US Billboard 200 and number one on the US Top Heatseekers. Upon its release, 30 Seconds to Mars was met with mostly positive reviews; music critic Megan O’Toole felt that the band managed to “carve out a unique niche for themselves in the rock realm.” The album was a slow-burning success, and eventually sold two million copies worldwide.

Leto returned to acting in 2002 with the thriller Panic Room, which marked his second teaming with director David Fincher. He played the supporting role of Junior, a burglar who terrorizes Jodie Foster’s character Meg Altman. The film was well received by critics and became a financial success, grossing nearly US$200 million worldwide. In 2003, Leto and Cameron Diaz ended their four-year relationship. Leto’s next film was the 2004 biographical film Alexander, directed by Oliver Stone. He portrayed Hephaestion, the closest friend of Alexander the Great. The film failed in the United States; Stone attributed its poor reception to disapproval of the depiction of Alexander’s bisexuality, but it succeeded internationally, with worldwide revenue of US$167 million.

It took two years to record Thirty Seconds to Mars’ second studio album A Beautiful Lie, with the band traveling to four different continents to accommodate Leto’s acting career. A Beautiful Lie was released on August 30, 2005, in the United States. It has since been certified platinum by the Recording Industry Association of America (RIAA), and has reached platinum and gold status in several countries, with a sales total of over four million. The band heavily toured in support of the album and played at several major festivals, including Roskilde, Pinkpop, Rock am Ring, and Download.

In 2006, Leto appeared in the neo-noir crime drama Lonely Hearts, the true story of the notorious “lonely hearts killers” of the 1940s, Raymond Fernandez and Martha Beck. Playing Fernandez, he co-starred with Salma Hayek who played the role Beck. The film received mixed reviews from critics; however, Leto’s acting was widely praised; Heather Huntington from Reelz wrote that his “layered performance as the nattily dressing dandy with no remorse is truly impressive.”

Leto has been active in several charitable pursuits. He has been volunteering at the charity Art of Elysium, which helps children with serious medical conditions. He has supported the Barbara Davis Center for Childhood Diabetes, a program specializing in type 1 diabetes research and care. In 2006, he created the cover art for the album 97X Green Room: Volume 2, which proceeds from the sales benefited The Nature Conservancy. In June 2008, he joined Habitat for Humanity to work with Thirty Seconds to Mars on a home being repaired and renovated through the Greater Los Angeles Area’s “A Brush With Kindness” programme. He also supported Habitat for Humanity in Sentul, Kuala Lumpur, Malaysia.

In 2007, Leto starred in the biographical film Chapter 27. He portrayed Mark David Chapman, a fanatic fan of The Beatles and the murderer of John Lennon. Leto prepared for his role by relying on interviews with Chapman and on audiotapes recorded by a librarian which the actor met during a visit to the inmate’s hometown. Leto gained 67 pounds to approximate the killer’s physique. The abruptness of his weight gain gave him gout. He was forced to use a wheelchair due to the stress of the sudden increase in weight put on his body. After the shooting of the film, he quickly went on a liquid diet. Chapter 27 premiered at the 2007 Sundance Film Festival. Despite divided critical opinion on the film as a whole, Leto’s performance was widely praised. Owen Gleiberman of Entertainment Weekly considered his acting “a genuine transformation, as the actor submerges himself in Chapman’s couch-potato flab and red-rimmed eyes. … Leto disappears inside this angry, mouth-breathing psycho geek with a conviction that had me hanging on his every delusion.”

In August 2008, during the recording process of their third studio album, Thirty Seconds to Mars attempted to sign with a new label, prompting EMI (the parent label of Virgin), to file a $30 million breach of contract lawsuit. After nearly a year of legal battles, the band announced on April 28, 2009, that the suit had been settled following a defence based on the De Havilland Law. Thirty Seconds to Mars then signed a new contract with EMI and released their third album This Is War in December 2009 to critical acclaim. This Is War reached the top ten of several national album charts and earned numerous music awards.

Leto lives a vegan lifestyle and supports animal rights. In 2008, he supported the California Proposition 2 regarding treatment of farm animals. In the 2008 presidential election, Leto supported Senator Barack Obama of Illinois. In 2012, he chaired a Gen44 event, a campaign set up by Obama to energize voters under 40. Leto is a gay rights activist. In October 2009, he raised money to the campaign against California Proposition 8, created by opponents of same-sex marriage to overturn the California Supreme Court decision that had legalized same-sex marriage. He spoke out in support of LGBT rights group Freedom Action Inclusion Rights (FAIR). In May 2012, he expressed support after hearing that Barack Obama had endorsed same-sex marriage.

In 2009, Leto recruited scores of extras and all manner of surrealist street performers for the short film of “Kings and Queens”, which features a critical mass movement founded with forward-thinking and eco-conscious intentions, through Los Angeles at night. The short film premiered on November 9, 2009 at the Montalban Theater in Los Angeles and was positively received. At the 2010 MTV Video Music Awards, “Kings and Queens” received four nominations, including Video of the Year and Best Direction, and went on to win Best Rock Video. Thirty Seconds to Mars began their Into the Wild Tour in February 2010 and was among the hardest-working touring artists of the year.

After the strong relationship between Thirty Seconds to Mars and its audience, Leto launched the social media management and digital marketing company The Hive. It is based in Studio City, Los Angeles and focus on creative community building. In recent years, it has expanded to other artists such as Jessie J and Semi Precious Weapons. In 2010, Leto launched The One and Only Golden Tickets, a full service company which operates worldwide and manages exclusive services for concerts, festivals, and events. In 2013, the company was renamed Adventures In Wonderland.

Leto filmed “Closer to the Edge” (2010), a short film featuring tour footage, fan commentary and pictures of Thirty Seconds to Mars from their youth, during the band’s Into the Wild Tour. Critics lauded the simplicity of the video; James Montgomery from MTV wrote, “there’s no denying the power of seeing tens of thousands of fans finding a simultaneous salvation, of a crowd of individuals becoming one. It’s what rock and roll is supposed to be about, really: inclusion.” In December 2011, Thirty Seconds to Mars entered the Guinness World Records for most live shows during a single album cycle, with 300 shows.

In 2011, Leto launched the online platform VyRT. Created as a live video streaming service, it also features social networking and official merchandise. Its idea came from some frustrating experiences Leto faced with Thirty Seconds to Mars in streaming their own live events. In June 2012, VyRT was awarded Best Online Concert Experience at the O Music Awards. In 2012, Leto became an investor in Surf Air, a California-based air service. He is also a funder for Reddit and Robinhood Markets.

Leto has supported Aid Still Required, a non-profit corporation committed to bringing attention and humanitarian aid to areas suffering from natural disasters or human crises. After the 2010 Haiti earthquake, he released a book of photographs taken during his trip to the Caribbean country in 2011, in a bid to raise funds for the earthquake-ravaged country. He has connected with and helped various organizations since arriving there, including J/P Haitian Relief Organization. Leto spent a year in Haiti during his childhood, and returned there in January 2011 to “reconnect” with his former home following the tremor of January 2010. On September 30, 2014, Leto hosted the event Haiti: The Journey Is the Destination in New York City, benefitting those affected by the 2010 earthquake in the Caribbean country. In February 2015, Leto was named a global ambassador for World Wide Fund for Nature (WWF), supporting online fundraisers and leading one for his 47th birthday in 2018.

In 2012, Leto made his directorial debut with the documentary film Artifact. It chronicles the modern music business as it charts the legal dispute between Thirty Seconds to Mars and record label EMI, after the band tried to exit its contract over a royalties dispute. Artifact was made on a limited budget provided by Leto and personal assistant Emma Ludbrook through the production company Sisyphus Corporation. It premiered at the 2012 Toronto International Film Festival where it received the People’s Choice Award for Best Documentary. Critics praised the examination of the state of the modern music industry and its focus on the relationship between artists and record companies. The film received a limited theatrical release beginning November 23, 2013, before being released digitally on December 3, 2013.

Thirty Seconds to Mars released their fourth album, Love, Lust, Faith and Dreams, in May 2013 through Universal. The album was produced by Leto with previous collaborator Steve Lillywhite. It received generally positive reviews and reached the top ten in more than fifteen countries, including the United Kingdom and the United States. Leto filmed the 2013 short film for “Up in the Air” at a now-defunct aerospace manufacturing building in Los Angeles, California. He described it as a “bizarre and hallucinogenic journey through an incredibly surreal landscape.” The short film features several artists, including burlesque dancer Dita Von Teese, gymnasts McKayla Maroney and Jordyn Wieber, writer Neil Strauss and a number of animals. It garnered several awards, including the MTV Video Music Award for Best Rock Video, and competed at the 2013 Camerimage.

Leto described the concept of his next short film, “Do or Die” (2013), as a companion piece to “Closer to the Edge” (2010). It was filmed during the Love, Lust, Faith and Dreams Tour and features live footage of Thirty Seconds to Mars onstage as well as fan commentary. The same year, Leto directed the critically praised short film for “City of Angels”, which premiered on October 12, 2013 at the Hollywood Bowl. The music video features a number of celebrities who join the three members of Thirty Seconds to Mars in sharing their visions about Los Angeles. Multiple monoliths and murals, including Michael Jackson and Marilyn Monroe impersonators, also appear, as well as homeless people hired by Leto himself for the video.

In 2014, Leto premiered the documentary series Into the Wild, which tells the story behind the concert tour of the same name by Thirty Seconds to Mars that propelled the group into arenas around the world and was certified by the Guinness World Records as the longest running tour in the history of rock music. The series was produced by Leto and Emma Ludbrook and was released through the online platform VyRT. On November 3, 2015, it was announced that Thirty Seconds to Mars were working on their fifth studio album.

In December of that year, Warner Bros. confirmed that Leto would play the role of the Joker in Suicide Squad (2016), a supervillain film based on the comic book series of the same name. The film opened to generally negative reviews from critics, but Leto’s performance was praised despite his character’s limited screen time. In April 2016, it was announced that Leto would appear in the film The Outsider (2018), directed by Martin Zandvliet.

In August 2016, Thirty Seconds to Mars revealed they had signed to Interscope Records and confirmed that a new album will be released in 2017. That same month Leto was cast as the villain Niander Wallace in the 2017 film Blade Runner 2049, the sequel to Blade Runner. Leto later also appeared in 2036: Nexus Dawn, a promotional short film that takes place before Blade Runner 2049 directed by Luke Scott and co-starring Benedict Wong.

In September 2016, it was announced that Leto would play Andy Warhol in a biopic written by Terence Winter and produced by Michael De Luca. Leto later confirmed his portrayal as Warhol on his Instagram in August 2020.

From May to September 2017, Thirty Seconds to Mars embarked on a North American tour with Muse and PVRIS. In August 2017, “Walk on Water” was announced as the lead single from the band’s fifth album. Thirty Seconds to Mars then performed the song at the 2017 MTV Video Music Awards featuring special guest Travis Scott. During the ceremony, Jared Leto received media attention for his tribute to musicians Chester Bennington and Chris Cornell, who both died earlier that year. In February 2018, the band officially announced the Monolith Tour with Walk the Moon, Misterwives, K. Flay, Joywave, and Welshly Arms. Thirty Seconds to Mars later confirmed America as title of their fifth album, which was released on April 6, 2018. The album received polarizing reviews from critics and debuted at number two on the Billboard 200, becoming the band’s highest entry on the chart.

In February 2017, it was announced that Leto would direct the thriller 77 for Paramount Pictures. Following the release of Suicide Squad, Leto expressed interest in reprising his role as the Joker in future DC Extended Universe instalments. In August 2017, it was confirmed that Leto will reprise his role in multiple films in the shared universe, including Gotham City Sirens, and an as-yet untitled film centered on the Joker and Harley Quinn. In June 2018, Variety reported that a film centered around the Joker is in development. Leto will serve as an executive producer in addition to reprising his role as the Joker, with the studio’s intent that the film will “pave the way” for all other Suicide Squad-related projects. Leto will also be involved with hiring the film’s production crew. In October 2020, it was reported that Leto would reprise his role of the Joker in Zack Snyder’s Justice League.

In November 2017, Sony Pictures announced plans for a film adaptation of Morbius, the Living Vampire, which will be part of Sony Pictures Universe of Marvel Characters. On June 27, 2018, it was announced that Leto will star, and Daniel Espinosa will direct. The film is scheduled to be released on March 19, 2021.

In August 2020, it was announced that Leto would star as the character Ares in the yet-untitled Tron 3 film, the sequel to 2010’s Tron: Legacy, which he later confirmed on his Instagram.