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.

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

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

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