The men's 100 metres at the 2013 World Championships in Athletics was held at the Luzhniki Stadium on 10 and 11 August.

Zhang improved his record to 10.00 in the semifinal, but failed to advance to the final, it took 9 thousands faster as Christophe Lemaitre was the last qualifier.

Under the conditions, the medallists were the only finalists to improve upon their semifinal time in better weather earlier in the evening.

[2] With the Russian all comers record at 10.03 coming into this meet,[3] three competitors improved upon this mark through the heats.

[7][8] Despite being last in his heat and among the slowest runners to feature at the championships, Afghanistan's Masoud Azizi was disqualified for performance-enhancing drug use after a positive test for nandrolone.