Diskografi Dream Theater
Album > Album Studio

| Tahun | Detail Album | Posisi Tangga Lagu> US  | Posisi Tangga Lagu> FIN  | Posisi Tangga Lagu> FRA  | Posisi Tangga Lagu> GER  | Posisi Tangga Lagu> JPN  | Posisi Tangga Lagu> NLD  | Posisi Tangga Lagu> NOR  | Posisi Tangga Lagu> SWE  | Posisi Tangga Lagu> SWI  | Posisi Tangga Lagu> UK  | Penjualan | Sertifikasi (ambang penjualan) |  |  |  |  |
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| 1989 | When Dream and Day Unite Rilis: 6 Maret 1989  Label: Mechanic, MCA Records  Format: CD, Kaset, LP | — | — | — | — | 98 | — | — | — | — | — |  US: 37,092+ |  |  |  |  |  |
| 1992 | Images and Words  Rilis: 7 Juli 1992  Label: Atco  Format: CD, kaset, LP | 61 | — | — | 94 | 30 | — | — | — | — | — |  US: 604,000+ |  US: Gold  NL: Gold |  |  |  |  |
| 1994 | Awake Rilis: 4 Oktober 1994  Label: East West  Format: CD, kaset, LP | 32 | — | — | 15 | 7 | 33 | — | 5 | 12 | 65 |  US: 271,570+ |  JAP: Platinum |  |  |  |  |
| 1997 | Falling into Infinity Rilis: 23 September 1997  Label: East West  Format: CD, kaset, LP | 52 | 5 | 42 | 9 | 16 | 16 | 20 | 14 | 43 | 163 |  US: 141,946+ |  |  |  |  |  |
| 1999 | Metropolis Pt. 2: Scenes from a Memory Rilis: 26 Oktober 1999  Label: Elektra  Format: CD, kaset, LP | 73 | 6 | 40 | 8 | 19 | 28 | 28 | 44 | 44 | 131 |  US: 123,275+ |  |  |  |  |  |
| 2002 | Six Degrees of Inner Turbulence Rilis: 29 Januari 2002  Label: Elektra  Format: CD, kaset, LP | 46 | 2 | 17 | 12 | 15 | 14 | 16 | 12 | 52 | — |  US: 32,773+ |  |  |  |  |  |
| 2003 | Train of Thought Rilis: 11 November 2003  Label: Elektra  Format: CD, kaset, LP | 53 | 9 | 24 | 16 | 12 | 21 | 9 | 9 | 44 | 146 |  US: 125,000+ |  |  |  |  |  |
| 2005 | Octavarium Rilis: 7 Juni 2005  Label: Atlantic  Format: CD, kaset, LP | 36 | 2 | 18 | 15 | 10 | 9 | 9 | 4 | 25 | 72 |  US: 56,000+ |  |  |  |  |  |
| 2007 | Systematic Chaos Rilis: 5 Juni 2007  Label: Roadrunner  Format: CD, DVD, LP | 19 | 3 | 17 | 7 | 12 | 2 | 3 | 5 | 14 | 25 |  US: 36,000+ |  |  |  |  |  |
| 2009 | Black Clouds & Silver Linings Rilis: 23 Juni 2009  Label: Roadrunner  Format: CD, DVD, LP | 6 | 1 | 9 | 3 | 8 | 3 | 7 | 3 | 9 | 23 |  US: 40,000+ |  |  |  |  |  |
| 2011 | A Dramatic Turn of Events Rilis: 13 September 2011  Label: Roadrunner  Format: CD, DVD, LP | 8 | 1 | 16 | 3 | 8 | 2 | 5 | 3 | 6 | 17 |  US: 36,000+ |  |  |  |  |  |
| 2013 | Dream Theater Rilis: 24 September 2013  Label: Roadrunner  Format: CD, DVD, LP | 7 | 2 | 18 | 4 | 10 | 4 | 4 | 5 | 5 | 15 |  US: 34,000+ |  |  |  |  |  |
| 2016 | The Astonishing Rilis: 29 Januari 2016  Label: Roadrunner  Format: CD, DVD, LP |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| 2019 | Distance over Time Rilis: 22 Februari 2019  Label: Inside Out Music  Format: CD, DVD, LP |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| 2021 | A View from the Top of the World Rilis: 22 Oktober 2021  Label: Inside Out Music  Format: CD, DVD, LP |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| 2025 | Parasomnia Rilis: 7 Februari 2025  Label: Inside Out Music  Format: CD, LP |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
"—" denotes releases that did not chart or were not released in that country.