Rachel Haden (born October 11, 1971 in New York City) is an American musician and one of the triplet daughters of jazz bassist Charlie Haden.

In the early 1990s, Haden played bass guitar for That Dog, a band that also included her sister Petra. Her sister Tanya also contributed cello on several That Dog recordings, but did not tour as an official member of the band. Around this time Haden also played drums and performed backup vocals for Beck on the songs "Totally Confused" and "Steve Threw Up”. She also played drums for Beck's "Pink Noise (Rock Me Amadeus)".

Later, Haden became one of the four early members of the band the Rentals, along with Rod Cervera and Weezer’s Patrick Wilson and Matt Sharp. In 1996, she performed lead vocals on the Weezer song "I Just Threw Out the Love of My Dreams", originally written for the abandoned Songs from the Black Hole album. Haden was Rivers Cuomo's choice to play the "good girl" character, Laurel.

In 1999, Haden contributed a cover of the song "Poems, Prayers, and Promises" to the album A Tribute to John Denver. Around this same time, she played bass and performed vocals as a member of The Martinis, along with Pixies guitarist Joey Santiago and his wife Linda Mallari. In 1999 Haden also contributed backing vocals on "Snoother" by The For Carnation on their eponymous album.

In 2001, Haden toured as a backup singer and keyboardist for Jimmy Eat World and is credited on their album Bleed American released that same year. She contributed vocals to the Dntel album Life Is Full of Possibilities. In 2004, Haden, along with her sisters Petra and Tanya, recorded a set of traditional country songs as the Haden Triplets with their longtime friend and former Dieselhed member Zac Holtzman, currently of the band Dengue Fever.

In 2004 she contributed backing vocals for four songs on Lucky Pierre's ThinKing album. She continued to make music in the Los Angeles area, including with sister Petra's a cappella choir the Sell Outs and as a member of the most recent lineup of The Rentals. Haden performed the female vocals for the duet "Heartache Vs Heartbreak" from Ozma's 2007 album Pasadena. She also performed the female vocals on the Fightstar album One Day Son, This Will All Be Yours. She sings backing vocals on the tracks "Unfamiliar Ceilings", "You & I", and the new b-side "Gracious".

Haden can also be heard doing vocals throughout comedian Neil Hamburger's foray into music, the album Neil Hamburger Sings Country Winners. She duets with Hamburger on the song "Please Ask That Clown To Stop Crying". She also contributed her vocals for a duet with Japanese alternative rock band Asian Kung-Fu Generation, the song "Hello, Hello".

Haden toured with Todd Rundgren in late 2008, temporarily replacing longtime Rundgren bassist and collaborator Kasim Sulton.

Rachel Haden's Debut Solo LP "July 6" is out now via Greenway Records