| Dream Theater Albums |
| album | date | label |
| Images and Words | 7 Jul 1992 | Table Of Elements |
| Train of Thought | 22 Jun 2004 | Elektra Records |
| Octavarium | 7 Jun 2005 | Warner Bros. |
| Awake | 4 Oct 1994 | East/West Records |
| Systematic Chaos | 19 Jun 2007 | Roadrunner Records Inc. |
| Falling Into Infinity | 23 Sep 1997 | Atlantic Records |
| Scenes From a Memory | 30 Apr 1996 | Atlantic Records |
| A Change of Seasons | 19 Sep 1995 | East/West Records |
| Six Degrees of Inner Turbulence | 23 Jan 2002 | WEA |
| When Dream And Day Unite | 29 Jul 1992 | Universal Music S.A. |
| Live At Budokan | 29 Jul 1992 | Rhino Atlantic |
| Live Scenes From New York | 16 Oct 2001 | Elektra / Wea |
| Live Scenes From New York (disc 1) | 2001 | Elektra |
| Once in a Livetime | 27 Oct 1998 | East/West Records |
| Live at the Marquee | 1993 | WEA |
| Six Degrees of Inner Turbulence (disc 1) | 29 Jan 2002 | WEA |
| Live Scenes From New York (disc 2) | 2001 | Elektra |
| Once in a LIVEtime (disc 2) | 2001 | Elektra |
| Acoustic Dreams | 1995 | Elektra |
| When Dream and Day Reunite | 2005 | Elektra |
| Six Degrees of Inner Turbulence (disc 2) | 23 Jan 2002 | Elektra |
| Metropolis Part 2: Scenes From A Memory | 23 Jan 2002 | Elektra |
| Six Degrees of Inner Turbulance | 23 Jan 2002 | Capitol |
| Greatest Hit [...and 21 other pretty cool songs] | 7 Apr 2008 | Rhino Atlantic |
| Dark Side Of The Moon | 0 Apr 2006 | Rhino Atlantic |
| Master of Puppets | 22 Mar 2004 | Rhino Atlantic |
| The Number of the Beast | 2005 | Rhino Atlantic |
| Metropolis Part 2: Scenes From a Memory | 26 Oct 1999 | East West |
| Score: 20th Anniversary World Tour Live with the Octavarium Orchestra | 26 Oct 1999 | Rhino |
| Six Degrees of Inner Turbulence (CD2) | 26 Oct 1999 | Table Of Elements |
| Live Scenes From New York (Disc 3) | 2001 | Elektra |
| Once in a LIVEtime (disc 1) | 1998 | Elektra |
| Live At HOB Orlando 03/03/00 | 1998 | Elektra |
| Made in Japan | 9 Sep 2007 | Elektra |
| Through Her Eyes | 23 Jul 2002 | Msi Music Corp |
| A Sort of Homecoming | 2005 | Msi Music Corp |
| 1998-12-30: 5 Days in a Lifetime, The Chance, Poughkeepsie, NY, USA (disc 1) | 2005 | Msi Music Corp |
| Hollow Years | 1997 | Pid |
| Metropolis Pt. II: Scenes From A Memory | 1997 | Elektra |
| Once In A Live Time | 1997 | |
| Ancienne Belgique (disc 2) | 1997 | |
| Six Degrees Of Inner Turbulence (CD1) | 1997 | Wea/Elektra |
| The Silent Man | 1994 | Wea/Elektra |
| Lie | 5 Dec 1994 | Alex |
| The Majesty Demos 1985-1986 | 2003 | Alex |
| Score: 20th Anniversary World Tour Live with the Octavarium Orchestra [w/Interactive… | 2003 | Rhino |
| Live at Budokan (disc 2) | 5 Oct 2004 | Rhino |
| Live at Budokan (disc 1) | 5 Oct 2004 | Warner |
| Caught in São Paulo | 1997 | Warner |
| Taste the Memories | 0 Dec 2002 | Warner |
| Another Day | 1992 | Warner |
| Live at Budokan (disc 3) | 5 Oct 2004 | Warner |
| Guitar Talkin' (Acoustic & Clinic) | 5 Oct 2004 | Warner |
| Four Degrees of Radio Edits | 0 Dec 2001 | Warner |
| Change Of Seasons | 0 Dec 2001 | |
| A Change of Season | 0 Dec 2001 | |
| The Atco Demos | 2002 | |
| Trial of Singles | 2002 | |
| Master of Metallica | 2002 | |
| Metropolis Part 2 - Scenes From a Memory | 2002 | |
| Scenes From a World Tour | 0 Dec 2000 | |
| Majestic Harmonies | 0 Dec 2000 | |
| Once in a LIVEtime Outtakes | 0 Dec 1998 | |
| International Fan Club Christmas CD 1996 | 0 Dec 1996 | |
| Instrumental I | 1987 | |
| The Making of Falling Into Infinity | 0 Dec 1997 | |
| Uncovered (disc 2) | 0000 | |
| Uncovered (disc 1) | 0000 | |
| Antiquities | 0000 | |
| Graspop Festival 2002 | 0 Dec 2003 | |
| Forsaken | 28 Mar 2008 | Roadrunner Records |
| Precious Things | 28 Mar 2008 | Roadrunner Records |
| Instrumental II: Your Brain on Our Music | 1987 | Roadrunner Records |
| Three Hours of Inner Turbulence | 1987 | Roadrunner Records |
| Dream Out Loud | 1987 | Roadrunner Records |
| Live Metropolis, Pt. 2 | 6 Oct 2001 | WEA Japan |
| Live Scenes From Orlando | 6 Oct 2001 | WEA Japan |
| Subconscious | 6 Oct 2001 | WEA Japan |
| Metropolis 2000 Scenes From a World Tour | 6 Oct 2001 | WEA Japan |
| The Making of Scenes From a Memory: The Alternate Mixes | 2003 | WEA Japan |
| Six Degrees Of Inner Turbulanc | 2003 | Capitol |
| As I Am | 2003 | Capitol |
| Stranger Than Fiction | 2003 | Capitol |
| Silent Man | 2 Feb 1999 | Wea International |
| Number Of The Beast | 2 Feb 1999 | |
| 1995-10-28: Tokyo, Japan (disc 2) | 2004 | |
| When Demos and Singles Unite (disc 1) | 2002 | |
| Hollow Years Single | 2002 | |
| Live Scenes From Ny | 2002 | |
| Precious Dreams | 2002 | |
| When Dream and Day Unite Demos 1987-1989 (disc 2) | 2004 | |
| 1998-05-18: Los Angeles, CA, USA (disc 1) | 2003 | |
| When Dream and Day Unite Demos 1987-1989 (disc 1) | 2004 | |
| The Darkest of Winters | 2004 | |
| 1998-05-18: Los Angeles, CA, USA (disc 2) | 2003 | |
| 1995-10-28: Tokyo, Japan (disc 1) | 2004 | |
| Instrumental III: No Sleep Since Brooklyn | 1987 | |
| Change of Seasons, a | 28 Oct 1994 | |
| Christmas CD 1999: "Cleaning Out the Closet" | 28 Oct 1994 | |
| The Making of Scenes From a Memory: The Sessions | 2003 | |
| Rotterdamned (disc 3) | 2003 | |
| The Show That Stumped Them All (disc 1) | 2003 | |
| 1998-12-30: 5 Days in a Lifetime, The Chance, Poughkeepsie, NY, USA (disc 2) | 2003 | |
| Dark Side of a Dream (2005-10-11: Amsterdam, The Netherlands) | 2003 | |
| When Dream and Today Unite | 2003 | |
| Making Of Scenes From A Memory | 2003 | |
| Images and Words Demos 1989 - 1991 (disc 2) | 2005 | Wea International |
| Dream Theater Fan Club CD (1998) | 2005 | Wea International |
| Ancienne Belgique (disc 1) | 30 Nov 2001 | Wea International |
| Dance of Eternity | 30 Nov 2001 | Wea International |
| Mind Control (disc 1) | 1995 | Wea International |
| Foresaken - EP | 6 May 2008 | Roadrunner Records Inc. |
| The Dance of Eternity (disc 2) | 6 May 2008 | Wounded Bird |
| The Dance of Eternity (disc 1) | 3 Apr 1993 | Wounded Bird |
| Nighttown Nostalgia (disc 1) | 30 Nov 2001 | Wounded Bird |
| Rotterdamned (disc 1) | 30 Nov 2001 | Wounded Bird |
| Train to Madrid (disc 1) | 30 Nov 2001 | Wounded Bird |
| Dream of the Beast (disc 1) | 24 Oct 2002 | Wounded Bird |
| Score： 20th Anniversary Worldtour Live With The Octavarium Orchestra | 24 Oct 2002 | |
| Majesty Demos 1985-1986 | 24 Oct 2002 | |
| Dream of the Beast (disc 2) | 24 Oct 2002 | Roadrunner Records Inc. |
| Images and Words Demos 1989 - 1991 (disc 1) | 2005 | Roadrunner Records Inc. |
| Master of Puppets (2002-2-19: Razzmatazz, Barcelona, Spain) | 2002 | Roadrunner Records Inc. |
| Train to Madrid (disc 2) | 1993 | Roadrunner Records Inc. |
| Dream of the Beast (disc 3) | 24 Oct 2002 | Roadrunner Records Inc. |
| Brand New Album | 24 Oct 2002 | |
| Systematic Chaos (Sped) | 24 Oct 2002 | |
