|UFC 44: Undisputed|
|Promotion||Ultimate Fighting Championship|
|Date||September 26, 2003|
|Venue||Mandalay Bay Events Center|
|City||Las Vegas, Nevada|
UFC 44: Undisputed was a mixed martial arts event held by the Ultimate Fighting Championship on September 26, 2003, at the Mandalay Bay Events Center on the Las Vegas, Nevada. The event was broadcast live on pay-per-view in the United States, and later released on DVD.
Headlining the card was a Light Heavyweight Championship unification bout between Tito Ortiz and Randy Couture. The total fighter payroll for the event was $467,500. The ring interviewer was Eddie Bravo. UFC 44 marked the first UFC appearance of future Welterweight Strikeforce Champion Nick Diaz.
|Light Heavyweight||Randy Couture (ic)||def.||Tito Ortiz (c)||Decision (Unanimous)||5||5:00||[a]|
|Heavyweight||Tim Sylvia (c)||def.||Gan McGee||TKO (Punches)||1||1:54||[b]|
|Heavyweight||Andrei Arlovski||def.||Vladimir Matyushenko||KO (Punch)||1||1:59|
|Middleweight||Jorge Rivera||def.||David Loiseau||Decision (Unanimous)||3||5:00|
|Light Heavyweight||Rich Franklin||def.||Edwin Dewees||TKO (Punches and Knees)||1||3:35|
|Welterweight||Karo Parisyan||def.||Dave Strasser||Submission (Kimura)||1||3:52|
|Lightweight||Josh Thomson||def.||Gerald Strebendt||KO (Punches)||1||2:45|
|Welterweight||Nick Diaz||def.||Jeremy Jackson||Submission (Armbar)||3||2:04|
|Lightweight||Hermes Franca||def.||Caol Uno||KO (Punch)||2||2:46|