Kravitz was born in Manhattan, New York, the only child of Actress Roxie Roker (1929–1995) and NBC television news Producer Sy Kravitz. His father was from a Jewish family (with origins from Ukraine; see the Kravits surname). His mother Roxie Roker was of Bahamian and African-American descent, and was from a Christian family. Through his mother, Kravitz is the cousin once removed of television weather presenter Al Roker. During his early years, Kravitz did not grow up in a religious environment. After a spiritual experience when he was 13, he started attending church, becoming a non-denominational Christian.

In 1974, the Kravitz family relocated to Los Angeles when Kravitz's mother landed her role on The Jeffersons. At his mother's urging, Kravitz joined the California Boys Choir for three years, where he performed a classical repertoire, and sang with the Metropolitan Opera. He took part in Mahler's Third Symphony at the Hollywood Bowl. It was in Los Angeles that Kravitz was first introduced to rock music, listening to The Rolling Stones, Led Zeppelin, The Grateful Dead, Aerosmith, Black Sabbath, Creedence Clearwater Revival, KISS, Pink Floyd, and The Who. "I was attracted to the cool style, the girls, the rock 'n' roll lifestyle," Kravitz said. Kravitz's other musical influences at the time included Fela Kuti, Bill Withers, Marvin Gaye, Pharoah Sanders and Miles Davis; John Lennon and Bob Marley proved later to be influential as well. Kravitz attended Beverly Hills High School. Maria McKee, actor Nicolas Cage and musician Slash were his classmates. In 1978, Kravitz was accepted into the school's well-respected music program. He taught himself to play piano and bass, and made friends with Zoro who would later become his long-time collaborator. Kravitz wanted to be a session musician. He also appeared as an actor in television commercials during this time.

In 1985, Kravitz's parents divorced, which had a profound impact on him. His relationship with his father became extremely strained. Kravitz focused on his music to help him get through this period. That year, Kravitz met Actress Lisa Bonet backstage at a New Edition concert. Bonet worked on The Cosby Show, the number one rated show on television. They were close friends for two years before falling in love. Like Kravitz, Bonet is half Black and half Russian-Jewish. Kravitz moved back to New York City where The Cosby Show was produced in 1987, moving in with Bonet.

Kravitz and Bonet eloped to be married on November 16, 1987, her 20th birthday, in a Las Vegas ceremony. Kravitz, still known as Romeo Blue at the time, suddenly found himself in the headlines of tabloid newspapers. They had a daughter, Zoë Isabella Kravitz, born on December 1, 1988, who became an Actress, singer, and model. Kravitz and Bonet divorced amicably in 1993. He then dated French singer and model Vanessa Paradis until 1997. In 2001, he began dating Brazilian model Adriana Lima. In 2002, the couple were engaged, but less than a year later, the engagement was called off. He briefly dated and was engaged to Australian Actress Nicole Kidman in 2003-2004.

In October 1988, after completing most of the recording, Kravitz approached friend Stephen Elvis Smith who had served as the Music Supervisor on Lisa Bonet's spin-off of The Cosby Show, A Different World. Smith had also worked with Kravitz' mother, on the hit sitcom The Jeffersons. Kravitz urged Smith to manage his career and assist him in finding a record deal. In less than a month of shopping the recordings, five labels (Warner Bros, Elektra, Geffen, Capitol and Virgin) were in a bidding war for Kravitz. Eventually a deal was made with Virgin Records in January 1989, and signed by Virgin A&R executive Nancy Jeffries. The label was excited about the music he was making, music inspired by his relationship with wife Bonet and their new daughter, Zoe. On Smith's urging, Kravitz dropped the name Romeo Blue and reclaimed the Lenny Kravitz moniker. About his time as Romeo Blue, Kravitz said, "Ultimately, it got me back to myself. And when I finally did accept myself for myself, music started flowing out of me."

Kravitz released his début album Let Love Rule on September 6, 1989, a combination of rock and funk with a 1960s vibe. Music critics were mixed: some felt Kravitz was a gifted new Artist, others felt he was overpowered by his musical influences. The album was a moderate success in the United States, but became an instant hit outside of the US, especially in Europe. Lisa Bonet directed the debut music video for the title track, "Let Love Rule". Stephen Smith signed Kravitz with talent booking agency CAA, who soon were fielding offers for Kravitz, first on a club tour, and then in opening slots for Tom Petty & the Heartbreakers, Bob Dylan and David Bowie. Having played essentially all of the instruments on the album, Kravitz had to quickly assemble a touring band to support the Let Love Rule release. They included a childhood friend, Zoro on drums (formerly of Bobby Brown's band), Adam Widoff (guitar), Lebron Scott (bass guitar, recruited from Curtis Mayfield's band after seeing them perform in a NYC club), Kenneth Crouch (keyboards) and Karl Denson on saxophone. In May 2009, a 20th Anniversary Deluxe Edition of "Let Love Rule" was released worldwide by Virgin. The double disk includes a booklet with rare photos, and 18 additional demos, bonus tracks and live recordings. Kravitz launched a LLR(20) tour of Europe and the United States in support of the re-release. And the principal of his career in Brittany, at Rennes [16]

In 1990, Kravitz produced the song "Justify My Love" for Madonna, which he co-wrote with Ingrid Chavez. The song, which appeared on her greatest hits album The Immaculate Collection and created controversy because of its explicit video, went to number 1 for two consecutive weeks. When MTV banned the video, the video was quickly made available for sale at record stores, and immediately sold over 500,000 copies. Kravitz separated from Lisa Bonet in 1991, amid rumors of an affair between him and Madonna. Kravitz has denied any infidelity. Kravitz and Bonet divorced in 1993. In 1991, Kravitz produced the self-titled album Vanessa Paradis for French singer and Actress Vanessa Paradis. He played most of the instruments and co-wrote most of the songs on the album. He also released his second album, Mama Said, which was his first album to reach the Top 40. The songs on the album were about Bonet and dedicated to her, documenting his depression over their breakup. Kravitz's biggest single yet, "It Ain't Over 'til It's Over", went to number 2 on the Billboard Hot 100. The single "Always on the Run", a tribute to his mother, featured Slash on guitar. "Stand by My Woman" and "What Goes Around Comes Around" followed. Sean Lennon co-wrote and played piano on the song "All I Ever Wanted".

In 1993, Kravitz wrote "Line Up" for Aerosmith's Steven Tyler, and appeared on Mick Jagger's solo album, Wandering Spirit, in a cover of the Bill Withers soul classic "Use Me", and played guitar on the title track of David Bowie's The Buddha of Suburbia. That year Kravitz also got to work with idols Al Green and Curtis Mayfield. In 1993, Are You Gonna Go My Way was released, reaching number 12 on the Billboard 200 and Kravitz earned a BRIT Award for best international male Artist in 1994. The title track won a MTV Video Music Award for Best Male Video for the video produced by Mark Romanek, in which Kravitz slung his dreadlocks and wore high-heeled platform boots. During the presentation of the MTV Video Music Awards, he performed the song with John Paul Jones of Led Zeppelin on bass. Several singles from the album would follow, including "Believe", "Is There Any Love In Your Heart", and "Heaven Help/Spinning Around Over You". This album was the first to feature Guitarist Craig Ross, who has also played on all his subsequent albums. One song, "Eleutheria", was influenced by the island Eleuthera in The Bahamas where Kravitz built a house and recording studio at that time. In 1993, he also released the EP Spinning Around Over You, which included four live tracks from his "Universal Love Tour". A feature documentary about his 1994 tour entitled Alive from Planet Earth was directed by Doug Nichol and released.

With 5 (1998), Kravitz embraced digital Technology such as Pro Tools and samplers for the first time. Recorded in both his own New York City carriage house, and Compass Point Studios in The Bahamas, Kravitz employed engineer/producer Terry Manning to handle the recording duties. 5 introduced his music to an even wider audience thanks to the hit single "Fly Away" being featured prominently in both car manufacturer and airline commercials. 5 would reach number 28 on the Billboard 200, with "Fly Away" reaching number 12 on the Billboard Hot 100, topped both the Billboard Mainstream Rock Tracks and Modern Rock Tracks charts, and reached number 1 in the United Kingdom. He would win the first of his four consecutive Grammy for Best Male Rock Vocal Performance at the Grammy Awards of 1999. Other hits from the album included "If You Can't Say No", that was also remixed by dance Producer Brian Transeau, and "I Belong to You". For the "I Belong to You" video Lenny can be seen without his signature dreadlocks. In 1999 he produced and sang with Cree Summer on her solo album Street Faërie.

His cover version of The Guess Who's hit "American Woman" won him another Grammy at the Grammy Awards of 2000 and helped The Guess Who's song reach a new audience. Kravitz's version of the song originally came from the Soundtrack of Austin Powers: The Spy Who Shagged Me and was added to 5 as a bonus track in 1999. Kravitz worked on two songs for Michael Jackson's Invincible album released in 2001; a snippet of "Another Day" has leaked, and the full version was officially released on the album Michael in 2010.

Kravitz was the subject of a photo book by former chief Photographer for Rolling Stone, Mark Seliger. Published in November 2001, Seliger captures Kravitz on tour, with family, with friends and in posed portraits. Jay-Z invited Kravitz to appear on the track "Guns and Roses" on his 2002 The Blueprint²: The Gift & the Curse. Kravitz would also join P. Diddy, Pharrell and Loon on the track "Show Me Your Soul" from the Bad Boys II Soundtrack. In September 2002, Kravitz appeared alongside other rock stars in the episode "How I Spent My Strummer Vacation" of The Simpsons. In early 2003, Kravitz released the track "We Want Peace" as a download-only track as a protest against the 2003 invasion of Iraq, he performed this alongside famous Iraqi singer Kazem Al Saher at Rock The Vote. The track reached #1 on the world internet download charts and MP3.com download chart. Kravitz also appeared on Unity, the official album of the 2004 Athens Olympics, and performed a cover of "Have You Ever Been (To Electric Ladyland)" on the album Power of Soul: A Tribute to Jimi Hendrix.

Kravitz Design Inc. is a New York City-based company founded by Kravitz in 2003. Kravitz Design focuses on commercial, residential and product creative direction and design. Amongst its clients are the Morgans Hotel Group, Swarovski Crystal, and The Setai Group. [8] In 2010, Kravitz Design Inc. collaborated with Flavor Paper wallpaper on the Tropicalismo Collection, a line inspired by Brazil's Tropicalia art movement of the late 1960s. [9]

Swarovski selected Kravitz Design Inc. in 2005 and 2006 to participate in their Crystal Palace Collection. Kravitz Design Inc. has also envisioned a luxury recording studio for The Setai Resort and Residences in Miami Beach, New York, Paris and New Orleans. [10]

In January 2006, Kravitz contributed "Breathe" to absoluttracks, a project sponsored by Absolut Vodka. This song was re-mixed by ten musical producers and distributed via the internet. Kravitz appeared in the audience of Madonna's Confessions Tour (2006) during numerous shows. He later joined Madonna live on stage to play guitar on the song, "I Love New York," at the last of four Paris shows. Kravitz founded a design firm named Kravitz Design, stating if he hadn't been a musician he would have been a designer. Kravitz Design, focused on interior and furniture design, has designed residential spaces, as well as a chandelier for the crystal company Swarovski, named "Casino Royale."

Kravitz performed at the Grey Cup halftime show in Toronto at the Rogers Centre on November 25, 2007, where the Saskatchewan Roughriders beat the Winnipeg Blue Bombers 23-19. The original video for "I'll Be Waiting" was shot in Central Park in New York City with Marc Webb directing but that video was later shelved and a new version, which Kravitz co-directed with Philip Andelman, was filmed in Lenny's New York City recording studio. The video premiered on VH1's Top 20 Countdown at number 3. On January 17, 2008, Kravitz embarked on a 9 city mini-tour to promote his new album It Is Time for a Love Revolution. The tour started in Santa Monica, California and ended in New York City on February 1. The tour was done in association with Myspace and called the "Get on the Bus" tour. At each stop on the tour, they would pick up one contest winner and their guest and they rode on the "Love Revolution" bus until the end of the tour. Steven Tyler of Aerosmith, a close friend of Lenny's would appear at The Orpheum Theater in Boston. The New York City winner, Tyrone Good was presented a train ticket from Penn Station to travel to Philadelphia and rode with the tour the rest of the way starting in Philadelphia (The Electric Factory), Boston (The Orpheum Theater), and finally New York City (The Hammerstein Ballroom). Ryan Neuerburg, the San Francisco winner, embarked on almost the entire tour with his father, Tom Neuerburg. The winners were featured in the YRB February Edition alongside Lenny Kravitz in a magazine pull-out. The photo shoot took place at the Electric Factory in Philadelphia on stage. The winner's pull out was featured in another issue of YRB which had Lil' Wayne on the cover.

On February 11, 2008, Kravitz was admitted to Miami Hospital suffering from severe bronchitis. He had been suffering from a series of severe respiratory tract infections since mid-January, and the illness developed into bronchitis. Kravitz's illness had forced him to postpone Canadian dates and his trip to Europe to promote his album It Is Time for a Love Revolution. On March 19, 2008 he canceled the South American part of his tour due to the same illness. The decision affected planned concerts in Colombia, Mexico, Brazil and Argentina. In Argentina Kravitz had a performance in the biggest rock festival there, Quilmes Rock Fest. On July 15, 2008, Lenny was honored in Milan, Italy with the key to the city in a special toast ceremony for his work with the United Nations Millennium Campaign to end world poverty.

Kravitz made his feature film acting debut in Precious which premiered at the Sundance Film Festival in January 2009. During the Italian leg of his 53 date Let Love Rule (20)09 European tour, Kravitz had been instructed to cancel some shows due to a bad bout of bronchitis. Under strict orders from his Doctor, the singer was told to rest so that he could make a quick recovery and return to the stage for the rest of his tour. Shows scheduled for Rome on June 5 and Brescia on June 6 were postponed to late July.

In 1994, Kravitz recorded "Main Squeeze" with Teena Marie from her "Passion Play" CD. Lenny also made a video to pay tribute to Teena Marie when she suddenly passed away on December 26, 2010. Lenny recorded a funk-rock version of the song "Deuce" for the KISS cover album KISS My Ass: Classic KISS Regrooved. The track featured Stevie Wonder on harmonica and background vocals. This song was one of three radio singles from the album, and was also the album's lead-off track. Roxie Roker, Kravitz's mother, died in California on December 2, 1995, of breast cancer at the age of 66. In 1995, Lenny Kravitz released the album Circus, which went to number 10 on the Billboard chart on the back of his past achievement. However, the album only had two hit singles: "Rock and Roll Is Dead" and "Can't Get You Off My Mind".

Kravitz identifies himself as a Christian in a religious sense, "through choice but I'm also a Jew, it's all the same to me". During another interview Kravitz stated, "I'm half Jewish, I'm half black, I look in-between." He also notes that spirituality "has been an important issue in my growth", given his upbringing by parents of different faiths. Such spirituality is prominently featured in many of his songs, such as the lyrics on his album Baptism, and having his back inscribed with a tattoo stating, "My Heart Belongs to Jesus Christ." As late as 2011, Kravitz stated that his 2005 religious commitment to remain celibate until remarriage was unchanged.

Lenny Kravitz played the part of Katniss' creative Stylist, Cinna, in the first two Hunger Games films, The Hunger Games released on March 23, 2012 and The Hunger Games: Catching Fire released on November 22, 2013.

On September 23, 2014, Lenny Kravitz released his tenth studio album Strut on his own Roxie Records via Kobalt Label Services. The single "The Chamber" was released on June 24, 2014, followed by "Sex" on August 6 and "New York City" on October 21. along with the title track on February 17 and then the final single "The Pleasure And The Pain" on June 26.

In 2015 he became a furniture designer for the first time ever launching a collection of furniture products marketed under the label cb2 x kravitz design through retailer CB2.

In 2016 he earned a spot on the Fox Television series Star playing the part of Roland Crane in his first recurring television role.

Kravitz will commence his "Raise Vibration" world tour, in 2018, as well as releasing his 11th studio album, Raise Vibration, sometime in the spring.