2013 World Youth Championships in Athletics – Boys' 100 metres

The Boys' 100 metres at the 2013 World Youth Championships in Athletics was held on 10 and 11 July.

Records
Prior to the competition, the following records were as follows.

Heats
Qualification rule: first 2 of each heat (Q) qualified.

Semifinals
Qualification rule: first 2 of each heat (Q) plus the 2 fastest times (q) qualified.