Gordian Knot is a progressive rock/metal band directed by bass guitarist Sean Malone. At times its shifting lineup has included Steve Hackett of Genesis, Bill Bruford of King Crimson and Yes , Ron Jarzombek from Watchtower and Spastic Ink as well as Jim Matheos of Fates Warning, several of Malone's former bandmates from Cynic and John Myung from Dream Theater.

Band members:
Sean Malone - bass (live 1998-present) recordings: bass, sticks, guitars, keyboards, e-bow, echoplex, loops, occasional vocals

Current live members:
Vickram Badalpur - vocals, keyboards (live, 2007-present)
Jonathan Webber - guitars (live, 2007-present)
Thomas O' Meara - guitars (live, 2008-present)
Stephen Greenbank - drums (live, 2007-present)

Past members:
Sonia Lynn - vocals
Glenn Snelwar - guitars, mandolins
Paul Masvidal - guitars
Jason Gobel - guitars
Steve Hackett - guitars
Jim Matheos - guitars
Ron Jarzombek - guitars
Adam Levy - guitars
Trey Gunn - warr guitar
John Myung - chapman stick
Bill Bruford - drums
Sean Reinert - drums