The 1963 Belgian Grand Prix was a Formula One motor race, held at Spa-Francorchamps on 9 June 1963.

It was race 2 of 10 in both the 1963 World Championship of Drivers and the 1963 International Cup for Formula One Manufacturers.

Jim Clark won the race in extremely wet and rainy conditions.

After starting eighth on the grid, Clark passed all the cars in front of him, including early leader Graham Hill.

At the end of the race, Clark had not only lapped the entire field except for Bruce McLaren, but the margin to the second-placed Cooper driver was almost five minutes.