The 1999 IAAF World Cross Country Championships took place on 27 and 28 March 1999. The races were held at the Barnett Demesne/Queen's University Playing Fields in Belfast, United Kingdom. Reports of the event were given in The New York Times, in the Herald, and for the IAAF. Complete results for senior men, for senior men's teams, for men's short race, for men's short race teams, for junior men, for junior men's teams, senior women, for senior women's teams, for women's short race, for women's short race teams, for junior women, for junior women's teams, medallists, and the results of British athletes who took part were published.

Medallists

Race results

Senior men's race (12 km)

Men's short race (4.236 km)

Junior men's race (8.012 km)

Senior women's race (8.012 km)

Women's short race (4.236 km)

Junior women's race (6.124 km)

†: Nadia Ejjafini of 🇲🇦 was the original 21st-place finisher in 22:37 min, but was disqualified for age falsification.

Medal table (unofficial)

Participation

An unofficial count yields the participation of 759 athletes from 66 countries. This is in agreement with the official numbers as published. The announced athlete from did not show.