| Poltergeist | Album | February 22, 2003 | — |
| ECD MASTER | Album | February 19, 2003 | Compilation |
| Antipop Consortium vs. Matthew Shipp | Album | February 18, 2003 | — |
| “Uh Uh,,,,,,” / baby be mine | Single | February 5, 2003 | — |
| Lazyfatboy 4 Life | Album | February 2, 2003 | — |
| MTV ao vivo: Gabriel o Pensador | Album | February 2003 | Compilation, Live |
| Rimes & Gloire, Volume 2 | Album | February 2003 | Compilation |
| Best of Slim Shady | Album | January 24, 2003 | Compilation |
| We Are Hip Hop. Me. You. Everybody | Album | January 20, 2003 | Compilation |
| Selling Live Water | Album | January 13, 2003 | — |
| ’03 Bonnie & Clyde | Single | January 13, 2003 | — |
| California Soul | Album | January 1, 2003 | — |
| Deliverance | Album | January 1, 2003 | — |
| Mansbestfriend, Part 2: "No Thanks" | Album | January 1, 2003 | — |
| Music for Earthworms (The Instrumentals) | Album | January 1, 2003 | Remix, Mixtape/Street |
| Hey Ma | Single | January 2003 | — |
| Promo Only Canada: Mainstream Radio, February 2003 | Album | January 2003 | Compilation |
| 2003-08-01: Richfield, MN, USA | Album | 2003 | Live |
| 20th Century Masters: The Millennium Collection: The Best of Kurtis Blow | Album | 2003 | Compilation |
| 4 Pete Sake: The Pete Rock Years Remixes, Volume 1 | Album | 2003 | Compilation, Remix |
| A New Groove: A New Jean | Single | 2003 | — |
| A Taste of Tical 0 (The Prequel) Mixed by J-Love | Album | 2003 | Compilation |
| A Walk in the Woods | EP | 2003 | — |
| A.K.A. J. Yancey | Album | 2003 | Compilation |
| Acid Rain | Album | 2003 | Compilation |
| Act a Fool | Single | 2003 | — |
| All We Got Is Us | Album | 2003 | Compilation |
| Also Was !?! / Who Want It? | EP | 2003 | — |
| Back in the Mud | Single | 2003 | — |
| Back to the Beat | Album | 2003 | DJ-mix |
| Ballin Underground | Album | 2003 | Compilation |
| Balls and My Word (Screwed and Chopped) | Album | 2003 | Remix |
| Bazooka 2th (G-Man version) | Album | 2003 | DJ-mix |
| Beautiful | Single | 2003 | — |
| Beef / Monster Music (G.H.E.T.T.O.) | Single | 2003 | — |
| Behind Da Bars | Album | 2003 | Compilation |
| Belly Dancer / Sick! | Single | 2003 | — |
| Best of Canibus | Album | 2003 | — |
| Black Jesuz: The Best Songs | Album | 2003 | Compilation |
| Black Out | Single | 2003 | — |
| Breaking the Habit | Single | 2003 | — |
| Camouflage | Album | 2003 | — |
| Can't Let You Go (remix) | Single | 2003 | Remix |
| Champion Sounds | Album | 2003 | Compilation, DJ-mix |
| Chinese Box Set | Album | 2003 | Compilation |
| Choppin’ Em Up, Part 8 | Album | 2003 | Mixtape/Street |
| Close Edge | Single | 2003 | — |
| Collabos and Bullets | Album | 2003 | Compilation |
| Come Over | Single | 2003 | — |
| Cop That Shit | Single | 2003 | — |
| Crappy Old Sh*t | Album | 2003 | Compilation |
| D.I.G.I.T.A.L. | Album | 2003 | Compilation |
| Damn | Single | 2003 | — |
| Dance With Us (Theme from ''The Wild Thornberrys Movie'') | Single | 2003 | Soundtrack |
| Dangerous Language / Whirlwind 2 | Single | 2003 | — |
| Deliverance | Single | 2003 | — |
| Die gute Laune Hölle (Live Mitschnitt) | Album | 2003 | Live |
| Difesa personale | Album | 2003 | Demo |
| Diminishing Returns | Album | 2003 | Live, DJ-mix |
| Din till låns | Album | 2003 | Demo |
| Dirty Magazine | Album | 2003 | Compilation |
| Dirty South Classics | Album | 2003 | Compilation |
| Divine Design | Album | 2003 | — |
| DJ Lt. Dan Presents the Illest of M.O.P. | Album | 2003 | Compilation |
| Don't Call Me Marshall | Album | 2003 | Compilation |
| Don't Know What To Tell Ya / Got To Give It Up (Remix) | Single | 2003 | — |
| Dr Dre & Friends | Album | 2003 | Compilation |
| Dr. Dre Presents: Early Years of the West Side | Album | 2003 | Compilation |
| Dälek vs Velma | Single | 2003 | — |
| E&A Road Mix | Album | 2003 | Mixtape/Street |
| Earth, Wind & Fire | Album | 2003 | Compilation |
| East Side Unia 3 | Album | 2003 | Compilation |
| Empty Barrell | Single | 2003 | — |
| Ett hund | Album | 2003 | Compilation |
| Feel Good / The Essence | Single | 2003 | — |
| Fighting Temptation / Summertime | Single | 2003 | Soundtrack |
| Fish Outta Water: The Remixes | Album | 2003 | Remix |
| Fuck Music: The Bootleg Mixtape | Album | 2003 | Compilation |
| Full Clip Remix / Work Remix | Single | 2003 | Remix |
| Galang | Single | 2003 | — |
| Get It Off | Single | 2003 | — |
| Get Low | Single | 2003 | — |
| Ghetto Square Dance - DJ Tomekk Remix | Single | 2003 | — |
| Go With the Flow! | Album | 2003 | Compilation |
| Golden Age / African Style | EP | 2003 | — |
| Greenhouse / Movin’ | Single | 2003 | — |
| G‐Unit Radio: Smokin’ Day 2 | Album | 2003 | DJ-mix, Mixtape/Street |
| Hamburgs Finest Exclusive Mixtape Vol. 1 | Album | 2003 | Mixtape/Street |
| Harlem's Finest: A Freestyle History, Volume I & II | Album | 2003 | Compilation |
| Hello Nasty: Instrumentals | Album | 2003 | — |
| Hey Mama (Remix) | Single | 2003 | — |
| HH History | Album | 2003 | Interview |
| Hidden Darts Part II | Album | 2003 | Mixtape/Street |
| HIII | Album | 2003 | — |
| Hiphop.de Exclusive | Single | 2003 | — |
| Hits & Unreleased, Volume 1 | Album | 2003 | Compilation |
| Hits and Unreleased Vol. 1 | Album | 2003 | Compilation |
| Holidae In | Single | 2003 | — |
| Hot Damn | Single | 2003 | — |
| How We Do | Album | 2003 | — |