Tyondai Adaien Braxton (born October 26, 1978) is an American composer and musician. He has composed and performed music under his own name and collaboratively since the mid-1990s, including in the experimental rock group Battles from its formation in 2002 until his departure from the group in 2010.

The son of avant-garde jazz composer Anthony Braxton, as a child Tyondai Braxton was exposed to the music of Warne Marsh, Paul Desmond, and John Coltrane through his father. As a teen, he took musical inspiration from alternative rock bands Nirvana and Sonic Youth, as well as punk rock. Braxton studied composition at the Hartt School of the University of Hartford in West Hartford, Connecticut where his teachers included Robert Carl, Ingram Marshall, and Ken Steen.

In late 2002, Braxton co-founded Battles; he performed as the band's guitarist, keyboardist, and singer until his departure in 2010. The group received worldwide acclaim for their debut album Mirrored (2007), which was hailed by Time and Pitchfork as among the ten best records of the year. The 10-month tour for the record brought the band to such venues as the Cartier Foundation Museum in Paris, the Fuji Rock Festival in Northern Japan, and the Sydney Opera House in Australia for Brian Enoʼs Luminous Festival.

Braxton's Central Market was released worldwide by Warp Records in September 2009. The album, Braxton's second full length as a solo artist, features a large-scale orchestral score with performances by The Wordless Music Orchestra. The album's name is a nod to both Stravinsky's Petrushka (the fairytale-like bazaar that opens that ballet) and the worldwide market crash of 2008.

Central Market was premiered by Braxton and The Wordless Music Orchestra in the U.S at Lincoln Center, followed by performances at the Library of Congress and the Walker Arts Museum. The work premiered in the U.K at Steve Reich's 2011 Reverberation Festival, Barbican Centre, with the BBC Symphony Orchestra performing, and was adapted for ballet by Baryshnikov Art Center resident choreographer John Heginbotham.

In 2011, Braxton expanded his focus to an array of other commissions and performances, including a return to Alice Tully Hall to premiere TREMS, a new two-movement work for Bang on a Can All Stars; the Barbican premiere of Uffe’s Woodshop for string quartet, performed by the Kronos Quartet; and a duo with seminal composer Philip Glass for the New York edition of the All Tomorrow’s Parties festival in 2012. Central Market was then performed by the London Sinfonietta and Wordless Music Group at Queen Elizabeth Hall at the Southbank Centre in London.

In 2013, Alarm Will Sound premiered Braxton’s piece for chamber orchestra and electronics, Fly by Wire, commissioned by and performed at Carnegie Hall. Central Market was performed by the Los Angeles Philharmonic at Disney Hall, and the world premiere of HIVE (a multimedia composition for two modular synthesizers players and three percussionists on five large wooden pods) appeared at the Solomon R. Guggenheim Museum, commissioned by Works & Process at the Guggenheim. HIVE was then premiered in Europe in Kraków, Poland at the Sacrum Profanum festival.

In early 2014, Braxton collaborated with the electronic music pioneers Mouse on Mars, performing a new version of In C by the American composer Terry Riley as a part of the Stargaze festival in Berlin, Germany at the Volksbühne. HIVE premiered in Australia at MONA FOMA in Hobart, Tasmania and at The Sydney Opera House in Sydney Australia, as a part of Sydney Festival.