Athletics at the 2003 All-Africa Games – Men's 100 metres

The men's 100 metres at the 2003 All-Africa Games were held on October 11–12.

Heats
Qualification: First 3 of each heat (Q) and the next 3 fastest (q) qualified for the semifinals.

Wind: Heat 1: -0.1 m/s, Heat 2: -0.4 m/s, Heat 3: +0.1 m/s, Heat 4: +0.4 m/s, Heat 5: 0.0 m/s, Heat 6: 0.0 m/s, Heat 7: +0.3 m/s

Semifinals
Qualification: First 2 of each semifinal (Q) and the next 2 fastest (q) qualified for the final.

Wind: Heat 1: +0.7 m/s, Heat 2: +0.2 m/s, Heat 3: -1.0 m/s

Final
Wind: +0.6 m/s