2005 Catalan motorcycle Grand Prix
The 2005 Catalan motorcycle Grand Prix was the sixth round of the 2005 MotoGP Championship. It took place on the weekend of 10–12 June 2005 at the Circuit de Catalunya located in Montmeló, Catalonia, Spain.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 six has concluded.
;Riders' Championship standings
;Constructors' Championship standings
| Constructor | Points |
| 1 |  Yamaha | 145 |
| 2 | Honda | 121 |
| 3 | Kawasaki | 60 |
| 4 |  Ducati | 51 |
| 5 | Suzuki | 24 |
- Note: Only the top five positions are included for both sets of standings.
Sete Gibernau
Alex Barros