The men's 1500 metres at the 2012 World Junior Championships in Athletics will be held at the Estadi Olímpic Lluís Companys on 10 and 12 July.
Prior to the competition[update], the existing world junior and championship records were as follows.
Qualification: The first 3 of each heat (Q) and the 3 fastest times (q) qualified
According to an unofficial count, 37 athletes from 26 countries participated in the event.