2004 Portuguese motorcycle Grand Prix
The 2004 Portuguese motorcycle Grand Prix was the eleventh round of the 2004 MotoGP Championship. It took place on the weekend of 3–5 September 2004 at the Autódromo do Estoril.250 cc classification
125 cc classification
Below are the standings for the top five riders and constructors after round eleven has concluded.
;Riders' Championship standings
;Constructors' Championship standings
| Constructor | Points |
| 1 |  Honda | 245 |
| 2 | Yamaha | 224 |
| 3 |  Ducati | 103 |
| 4 | Suzuki | 58 |
| 5 | Kawasaki | 51 |
- Note: Only the top five positions are included for both sets of standings.
Sete Gibernau
Colin Edwards
Alex Barros