The men's 100 metres event at the 1994 World Junior Championships in Athletics was held in Lisbon, Portugal, at Estádio Universitário de Lisboa on 20 and 21 July.
Medalists
Results
Final
21 July
Wind: +1.2 m/s
Semifinals
21 July
Semifinal 1
Wind: +1.1 m/s
Semifinal 2
Wind: +0.8 m/s
Quarterfinals
20 July
Quarterfinal 1
Wind: +0.2 m/s
Quarterfinal 2
Wind: +1.6 m/s
Quarterfinal 3
Wind: +2.2 m/s
Quarterfinal 4
Wind: +1.3 m/s
Heats
20 July
Heat 1
Wind: +0.1 m/s
Heat 2
Wind: +0.3 m/s
Heat 3
Wind: +0.1 m/s
Heat 4
Wind: +2.8 m/s
Heat 5
Wind: +1.5 m/s
Heat 6
Wind: +1.7 m/s
Heat 7
Wind: +1.3 m/s
Heat 8
Wind: +1.5 m/s
Heat 9
Wind: +1.1 m/s
Participation
According to an unofficial count, 66 athletes from 50 countries participated in the event.