The 2004 Macau Grand Prix (formally the 51st Macau Grand Prix) was a motor race for Formula Three cars that was held on the streets of Macau on 21 November 2004. Unlike other races, such as the Masters of Formula 3, the 2004 Macau Grand Prix was not a part of any Formula Three championship, but was open to entries from all Formula Three championships. For the first time in the history of the Macau Grand Prix, the race itself was made up of two races: a ten-lap qualifying race that decided the starting grid for the fifteen-lap main race. The 2004 race was the 51st running of the Macau Grand Prix and the 22nd for Formula Three cars.