The eighth edition of the Pan Pacific Swimming Championships, a long course (50 m) event, was held in 1999 at the Sydney International Aquatic Centre in Sydney, Australia, from 22–29 August. Only two swimmers per country could compete in finals, and only four swimmers per country could compete in semi-finals.

Jason Edward Lezak is an American former competitive swimmer and swimming executive. As a swimmer, Lezak specialized in the 50-meter and 100-meter freestyle races. His pro career lasted for nearly fifteen years, spanning four Olympic games and eight Olympic medals.