2004 Catalan motorcycle Grand Prix
The 2004 Catalan motorcycle Grand Prix was the fifth round of the 2004 MotoGP Championship. It took place on the weekend of 11–13 June 2004 at the Circuit de Catalunya located in Montmeló, Catalonia, Spain.
This race saw the last non-factory rider to lead the championship before Cal Crutchlow in the 2018 Argentine Grand Prix.250 cc classification
125 cc classification
Championship standings after the race (motoGP)
Below are the standings for the top five riders and constructors after round five has concluded.
;Riders' Championship standings
;Constructors' Championship standings
| Constructor | Points |
| 1 |  Honda | 110 |
| 2 | Yamaha | 108 |
| 3 |  Ducati | 45 |
| 4 | Kawasaki | 22 |
| 5 | Suzuki | 15 |
- Note: Only the top five positions are included for both sets of standings.
Sete Gibernau
Alex Barros