Krist Anthony Novoselic was born in Compton, California, on May 16, 1965, the son of Croatian immigrants Kristo and Marija Novoselić. Kristo was a native of Veli Iž on the island of Iž while Marija originates from Privlaka. Novoselic lived in Compton for one year before his parents moved to the ethnically Croatian Los Angeles neighborhood of San Pedro. He has a younger brother, Robert (born 1968), and a younger sister, Diana (born 1973). In 1971, his family relocated to Aberdeen, Washington due to surging real estate costs in California. In 1980, his parents sent him to live with relatives in Zadar, Croatia. He returned to Aberdeen in 1981. He is partially fluent in Croatian. His earliest memory of listening to music is listening to Chuck Berry with his father. Growing up, he had a severe underbite, for which he underwent corrective surgery.

Burckhard lasted only a few months and Melvins’ drummer Dale Crover filled in until Novoselic and Cobain met Chad Channing. The trio recorded their debut album Bleach, released in 1989. Channing left the band in 1990 and was briefly replaced by Crover and Mudhoney drummer Dan Peters. Novoselic contributed to the writing of various songs, providing ideas for Cobain.

In 1989, Novoselic married Shelli Hyrkas, whom he had dated in high school. They divorced in 1999. In early 2004, he married American artist Darbury Ayn Stenderu, and they have two children. They reside on a farm near Deep River, Washington, where they grow their own food. Novoselic stated, “I live out in the country now and it’s quiet and it’s a place where I can think a lot.”

Later in 1990, Melvins’ singer-guitarist Buzz Osborne encouraged Novoselic and Cobain to check out a punk band called Scream. The pair were impressed by their drummer, Dave Grohl. A few weeks later, Scream disbanded, and Grohl placed a call to Osborne for advice. Osborne gave him Novoselic’s phone number, and Novoselic invited Grohl up to Seattle (from San Francisco, where Scream broke up). Grohl passed the audition and joined Nirvana. Grohl was Nirvana’s fifth and final drummer. This was after the first few recordings of songs from their Bleach Album. Novoselic spent the following months with Nirvana traveling to various labels as the band shopped for a deal, eventually signing with DGC Records.

At the 1992 MTV Video Music Awards, Nirvana would win awards for Best New Artist in a Video and Best Alternative Video for “Smells Like Teen Spirit.” At the show, Nirvana performed “Lithium”. When Novoselic started playing the opening bass riff, he signaled that he could not hear his bass. Instead of continuing to play, Novoselic threw his bass guitar in the air, to perform a “Bass Toss”. He failed to catch it, later stating that he misjudged the height; he further stated that he “faked like he was knocked out.” Musician Brian May ran to give him medical attention; he did not suffer any injuries.

In 1992, Novoselic and the rest of Nirvana recorded a compilation album named Incesticide. Novoselic helped write lyrics for the songs “Dive”, “Hairspray Queen”, and “Aneurysm” on the album. This album was produced by a joint venture between DGC and Sub Pop.

During Nirvana’s 1992 Reading concert, Novoselic sang Oakland punk band ‘Fang’s’ “The Money Will Roll Right In” with Cobain. Novoselic was an occasional vocalist and backing vocalist in Nirvana, occasionally singing “Scoff” and “Rape Me” at live shows. Novoselic stated that “I kind of discovered my voice for the first time, and the more I did it, the better it got.”

In 1992, the Washington state legislature attempted to pass a bill called the Erotic Music Law. The law would allow courts to declare certain albums “erotic” by their content, and would make it illegal to sell those albums to those under the age of 18. A lobbying group called the Washington Music Industry Coalition formed as a response to the bill. Novoselic and Nirvana actively campaigned against the bill and performed a benefit concert for the lobbying group in September 1992. Krist appeared on KOMO-TV’s “Town Meeting” YES opposing parties.

In September 1993, Nirvana’s third album In Utero, debuted at number one on the Billboard 200. However, the recording sessions mixed by Steve Albini were criticized by the band members, saying some songs “didn’t sound perfect”, as well as the band agreeing that Novoselic’s bass lines sounded “too low”. In Utero sold 3.5 million copies in the United States. In November of that year, Nirvana performed on MTV Unplugged with Lori Goldston playing cello, the introduction of guitarist Pat Smear, and Novoselic playing acoustic bass guitar, accordion, and acoustic rhythm guitar. This live performance was released a year later as an album, named MTV Unplugged in New York, which earned a Grammy Award for Best Alternative Music Performance.

Nirvana ended abruptly in April 1994 following Cobain’s death. For most of the rest of that year, Novoselic retreated from the spotlight. One of a few public appearances came that September at the MTV Video Music Awards, where the video for Nirvana’s “Heart-Shaped Box” was awarded for Best Alternative Video. Novoselic took the opportunity to pay tribute to Cobain.

After Cobain’s death, Novoselic continued to dabble in musical endeavors. He co-formed the band Sweet 75 with Venezuelan musician Yva Las Vegass in 1995, releasing a single self-titled album in 1997. In 1996, Novoselic joined singer Johnny Cash, guitarist Kim Thayil of Soundgarden and drummer Sean Kinney of Alice in Chains to record a cover of Willie Nelson’s “Time of the Preacher”, for the tribute album Twisted Willie, released in January 1996. In 1998, Novoselic directed his first movie, L7: The Beauty Process, a pseudo-documentary that utilizes concert footage taped in 1997 in three American cities. In 1999, he joined Jello Biafra and Soundgarden guitarist Kim Thayil in the No WTO Combo.

In 1995, the Erotic Music Law was reintroduced to the Washington State Legislature as the Matters Harmful to Minors bill. Noting that the music industry had serious clout in Seattle given the success of the scene, Novoselic proposed creating a political action committee, which was named JAMPAC (Joint Artists and Musicians Political Action Committee). Over the next several years, JAMPAC fought a number of different issues, including the Teen Dance Ordinance, a 1985 law that strictly limited the ability of minors to attend shows. With JAMPAC, Novoselic began to turn his focus more and more towards politics.

Novoselic’s first experience with Foo Fighters was during the encore of their show on August 29, 1997 at Memorial Stadium as part of the Bumbershoot festival, where he played bass for the band’s covers of “Purple Rain” and “Communication Breakdown”. In January 2002, Novoselic performed backing vocals for a non-album track titled “Walking a Line”, later released on a special edition of the band’s album One by One.

In 2002, Novoselic performed uncredited background vocals on Foo Fighters’ song “Walking a Line”, written as a tribute to Cobain, during the One by One album sessions. The track is included on the One by One bonus DVD, as well as being a bonus track to the album. He then joined former Meat Puppets front man Curt Kirkwood and former Sublime drummer Bud Gaugh to form Eyes Adrift. In Australia, there was another group called “Eyes Adrift”, and rather than pay to license that name, the trio called the band and album “Bud, Curt & Krist” in this nation. Eyes Adrift released a self-titled album with twelve songs, with the Japanese version including two extras. Eyes Adrift was the first official release in Krist’s career where he sang lead vocals, singing lead on “Inquiring Minds”, “Dottie Dawn & Julie Jewel” and “Pasted”. They also released a single named Alaska. He also took a highly active role in the songwriting process, co-writing several songs with Kirkwood. They toured mostly around the United States. The group disbanded in 2003.

Novoselic is an FAA-licensed pilot, earning a single-engine land rating after passing his flight test in April 2002. He went on to earn a multi-engine pilot certificate in February 2018. He has a strong interest in animals, geology, nature, and other sciences.

Novoselic’s first book, Of Grunge and Government: Let’s Fix This Broken Democracy, was published in October 2004. It covers Novoselic’s musical past, including Nirvana’s rise to a worldwide phenomenon of the early 1990s. It also covers his interest in politics, his support of electoral reform, and his belief in the need to return to grassroots movements and clean up politics overall.

In 2004, Novoselic’s book Of Grunge and Government: Let’s Fix This Broken Democracy! was published.

Following the end of Eyes Adrift, Novoselic announced that he was quitting the music business, noting that he disliked the process of building up publicity for new records. However, in 2005, Novoselic had occasionally worked on music for a possible solo album, noting, “Right now, I’m just doing it for myself, and that’s what it’s all about.”

In November 2006, it was announced that Novoselic would join Flipper, replacing Bruno DeSmartas on bass, for a tour of the United Kingdom and Ireland. He was a full-time member of the band and had been working on their new album. On September 22, 2008, because of responsibilities at home, Novoselic announced his departure from the band. As a result, the band canceled the remainder of the tour. Rachel Thoele then replaced Novoselic.

In November 2007, Novoselic started writing blogs for the Seattle Weekly website. He stopped writing for Seattle Weekly in September 2010.

Since 2007, Novoselic has been the DJ numerous times for Coast radio on KMUN.

Novoselic remains active in politics making appearances to advocate electoral reform (especially instant-runoff voting and proportional representation) and running the website. He considered a 2004 run for Lieutenant Governor of Washington as a Democrat, challenging an incumbent of the same party, but ultimately decided against it. He also joined the board of FairVote, then the Center for Voting and Democracy, and was appointed chair in January 2008.

He supported Democratic Senator Barack Obama in the 2008 presidential election, and in the primary. He has since broken with the Democratic Party, partly because “it’s a top-down structure” averse to reform from its grassroots. In 2007, he made a donation to Libertarian Republican Congressman Ron Paul.

In 2009, Novoselic played a newspaper vendor in the movie World’s Greatest Dad starring Robin Williams. In October 2010, Dave Grohl, former Nirvana bandmate of Novoselic, announced live on BBC radio, that Novoselic would be joining Foo Fighters as a bassist and accordionist on their next album, Wasting Light, which was released in 2011.

Later, during the encore of Foo Fighters’ secret show at Paladino’s in Tarzana, California on December 22, 2010, the band, with Grohl on drums, was joined onstage by Novoselic and the band’s live guitarist Pat Smear for a version of Nirvana’s “Marigold”, a 1992 Grohl original, which was a B-side on Nirvana’s “Heart-Shaped Box”. Novoselic also recorded bass and accordion for the song “I Should Have Known”, appearing on Foo Fighters’ seventh studio album Wasting Light.

Novoselic also played bass on children’s music artist Caspar Babypants’ 2010 album This Is Fun!, for a cover of the Nirvana song “Sliver”. In 2011, he performed “On a Plain” and “Sliver” with the band at the Nevermind 20th anniversary celebration in Seattle.

In 2012, Novoselic and Grohl partnered with Paul McCartney on the song “Cut Me Some Slack”, which was composed specially for the soundtrack of the documentary Sound City, directed by Grohl. The song was first shown on December 12, 2012, at the 12-12-12 festival, which brought together music stars for the victims of Hurricane Sandy in New York. The song was received well by critics. Allmusic called it a “tune with an immediate hook [and] melody”. The song won the Grammy award for Best Rock Song in 2014. The partnership was referred to as “Sirvana” by Novoselic, referring to “Sir Paul McCartney”.

Novoselic continues to support political reform, even looking at social networks such as Facebook and Twitter as major factors in shaping the political future. He explained his support for fair voting reforms on C-SPAN’s Washington Journal in 2012.

In 2014, ahead of Nirvana’s induction into the Rock and Roll Hall of Fame, Krist and Dave made guest appearances on The Tonight Show Starring Jimmy Fallon.

On April 17, 2016, Novoselic performed “Helter Skelter” with Paul McCartney in Seattle as part of the One on One tour.

In November 2016, Novoselic confirmed that he was in the process of writing new music. His current band is Giants in the Trees, formed in 2017, with band members Jillian Raye, Erik Friend and Ray Prestegard. He is also in the band Filthy Friends, playing bass and accordion. He also collaborates with Lepidopterist and author Robert Michael Pyle with the musical project Butterfly Launches from Spar Pole. In late July 2017, Giants in the Trees released their first song, “Sasquatch”, which features a music video Novoselic joked as “costing over 2 million U.S. dollars to produce”. Giants in the Trees’ first album was released in late 2017.

During the 2016 U.S. presidential campaign, Novoselic publicly supported and campaigned for Libertarian candidate Gary Johnson.

In 2016, Novoselic earned a BSc in social sciences from Washington State University Global Campus.

On December 5, 2017, Novoselic joined Foo Fighters on stage at Matthew Knight Arena in Eugene, Oregon, to play bass guitar on “Big Me”, a song from the Foo Fighters’ debut album Foo Fighters.

Ten months later, on October 6, 2018, Novoselic joined the band during an encore to play several Nirvana songs, with Dave Grohl on drums, Pat Smear on guitar, and John J. McCauley and Joan Jett filling in as their lead singer.

In June 2020, Novoselic made a Facebook post discussing President Trump’s speech in response to unrest following the killing of George Floyd. He called Trump “strong and direct”, but added that he “should not be sending troops into states”. Following criticism, Novoselic made his Facebook page private and deleted his Twitter account. After receiving backlash from the original post, Novoselic clarified, “As an avowed independent, I don’t endorse a major party or candidate. And it feels insane to have to say this, but I don’t support fascism, and I don’t support authoritarian state. I believe in a civilized society and that we all have to work toward that.”