- Megalomania (Live at Reading Festival) prod. by John Leckie
- Megalomania (XX Anniversary RemiXX) prod. by Chris Wolstenholme, Dominic Howard & Matt Bellamy
- Mercy prod. by Dominic Howard, Matt Bellamy & Robert John Lange
- Mercy (Live)
- Metal Medley (Live) (Unreleased)
- Micro Cuts prod. by Chris Wolstenholme, David Bottrill, Dominic Howard, John Leckie & Matt Bellamy
- Micro Cuts (HAARP, Live at the Wembley Stadium)
- Micro Cuts (Live at Reading Festival) prod. by John Leckie
- Micro Cuts (XX Anniversary RemiXX) prod. by Chris Wolstenholme, Dominic Howard & Matt Bellamy
- Minimum
- MK Ultra prod. by Chris Wolstenholme, Dominic Howard & Matt Bellamy
- Muscle Museum prod. by Paul Reeve
- Muscle Museum #2 prod. by Matt Bellamy
- Muscle Museum (Acoustic live demo, Airfield Studios, 1999) prod. by Paul Reeve
- Muscle Museum (Live Acoustic Version Kcrw - 8/3/99)
- Muscle Museum (Live, The Pyramid Centre, Portsmouth, 1999) prod. by Paul Reeve
- Muscle Museum (Muscle Museum EP Version) prod. by Paul Reeve
- Muscle Museum (Soulwax Remix)