Swimming at the 1963 Pan American Games – Men's 4 × 100 metre medley relay

The men's 4 × 100 metre medley relay competition of the swimming events at the 1963 Pan American Games took place on April. The defending Pan American Games champion is the United States.

Swimming at the 1963 Pan American Games – Men's 4 × 100 metre medley relay

The men's 4 × 100 metre medley relay competition of the swimming events at the 1963 Pan American Games took place on April. The defending Pan American Games champion is the United States.