| 1994 | Fragments of Music, Life and Death of Albert Ayler | Die Like a Dog: Peter Brötzmann, Toshinori Kondo, William Parker, Hamid Drake | | 1 |
| 1994 | Kingdom Come | Charles Gayle with Sunny Murray & William Parker | | 1 |
| 1994 | Sacred Scrape | Peter Brötzmann / Gregg Bendian / William Parker | | 1 |
| 1995 | Harras | Derek Bailey, John Zorn & William Parker | | 1 |
| 1995 | In Order To Survive | William Parker | | 1 |
| 1996 | Cama De Terra | Ivo Perelman + Matthew Shipp, William Parker | | 1 |
| 1997 | Sad Life | Ivo Perelman With William Parker And Rashid Ali | | 1 |
| 1998 | Through Acceptance of the Mystery Peace | William Parker | | 1 |
| 1999 | DNA | Matthew Shipp Duo with William Parker | | 1 |
| 1999 | A Hero's Welcome: Pieces for Rare Occasions | Alan Silva & William Parker | | 1 |
| 1999 | Zen Mountains Zen Streets | David Budbill & William Parker | | 1 |
| 2001 | Piercing the Veil | William Parker & Hamid Drake | | 1 |
| 2001 | Song Cycle | William Parker | | 1 |
| 2002 | Eloping with the Sun | William Parker | | 1 |
| 2003 | The Cooler Suite | Borgmann, Brötzmann, Parker, Bakr | | 1 |
| 2003 | Never Too Late But Always Too Early | Brötzmann, Parker, Drake | | 1 |
| 2003 | The All-Star Game | Allen / Drake / Jordan / Parker / Silva | | 1 |
| 2003 | The Victoriaville Tape | Peter Kowald, William Parker | | 1 |
| 2004 | After You Gone | Barre Phillips, Joëlle Léandre, William Parker, Tetsu Saitoh | | 1 |
| 2005 | Evolving Silence, Volume 1 | Albert Beger, Hamid Drake & William Parker | | 1 |
| 2005 | Luc's Lantern | William Parker | | 1 |
| 2006 | Only | Beans feat. William Parker & Hamid Drake | | 1 |
| 2006 | Palm of Soul | Kidd Jordan, Hamid Drake, William Parker | | 1 |
| 2006 | Evolving Silence, Volume 2 | Albert Beger, Hamid Drake & William Parker | | 1 |
| 2006 | Long Hidden: The Olmec Series | William Parker | | 1 |
| 2006 | The Dream | Daniel Carter / William Parker / Federico Ughi | | 1 |
| 2007 | Tamarindo | Tony Malaby / William Parker / Nasheet Waits | | 1 |
| 2007 | Corn Meal Dance | William Parker | | 1 |
| 2008 | Beyond Quantum | Anthony Braxton, Milford Graves & William Parker | | 1 |
| 2008 | DMG @ The Stone, Volume 2 | Raoul Björkenheim/William Parker/Hamid Drake | | 1 |
| 2009 | Farmers by Nature | Gerald Cleaver, William Parker, Craig Taborn | | 2 |
| 2010 | I Plan to Stay a Believer: The Inside Songs of Curtis Mayfield | William Parker | | 1 |
| 2010 | Prism | Ninni Morgia & William Parker | | 1 |
| 2011 | Winter Sun Crying | William Parker & ICI Ensemble | | 1 |
| 2011 | En Adir - Traditional Jewish Songs | Ivo Perelman, Marilyn Crispell, Gerry Hemingway, William Parker | | 1 |
| 2011 | Planetary Unknown | David S. Ware, Cooper-Moore, William Parker, Muhammad Ali | | 1 |
| 2011 | Knives From Heaven | Matthew Shipp William Parker Beans HPrizm | | 1 |
| 2012 | The Gowanus Session | Thollem / Parker / Cline | | 1 |
| 2012 | Altitude | Joe Morris, William Parker & Gerald Cleaver | | 1 |
| 2013 | Tender Exploration | William Parker, Conny Bauer, Hamid Drake | | 1 |
| 2014 | Medicine Buddha | Billy Bang & William Parker | | 1 |
| 2015 | For Those Who Are, Still | William Parker | | 1 |
| 2015 | Great Spirit | William Parker / Raining on The Moon | | 1 |
| 2016 | Stan's Hat Flapping In The Wind | William Parker feat. Lisa Sokolov & Cooper-Moore | | 1 |
| 2016 | Stan's Hat Flapping in the WInd | William Parker | | 1 |
| 2016 | Song Sentimentale | Peter Brötzmann, William Parker, Hamid Drake | | 1 |
| 2016 | Counteract this Turmoil like Trees and Birds | William Parker, Joe Morris, Hamid Drake | | 1 |
| 2017 | Bass Duo | William Parker & Stefano Scodanibbio | | 1 |
| 2017 | Deep Within | Gary Joseph Hassay, Dave Liebman, William Parker, Tatsuya Nakatani | | 1 |
| 2017 | CT: The Dance Project | Cecil Taylor, William Parker, Masashi Harada | | 1 |
| 2017 | What I Saw This Morning | William Parker, David Budbill | | 1 |
| 2018 | Flower in a Stained-Glass Window & The Blinking of the Ear | William Parker | | 1 |
| 2020 | Welcome Adventure! Vol. 1 | Daniel Carter, Matthew Shipp, William Parker & Gerald Cleaver | | 1 |
| 2020 | Every Dog Has Its Day but It Doesn't Matter Because Fat Cat Is Getting Fatter | Okuden Quartet: Mat Walerian, Matthew Shipp, William Parker, Hamid Drake | | 2 |
| 2020 | Migration of Silence Into and Out of the Tone World | William Parker | | 2 |
