The men's 100 metres at the 2019 World Athletics Championships was held at the Khalifa International Stadium in Doha on 27 to 28 September 2019.

[1] The semi-finals were dominated by world leader Christian Coleman, who was allowed to compete despite missing three doping tests in the year due to a technicality,[2] and blasted a 9.88 while no other qualifiers broke 10.

The last time qualifier, Filippo Tortu, made the final by .001, running 10.101 over Tyquendo Tracey's 10.102, while Aaron Brown got in by placing second behind Coleman in heat 1 with 10.12.

Returning to form, Andre De Grasse closed and nearly caught Gatlin at the line in 9.90, a new wind legal personal best.

[4] The event schedule, in local time (UTC+3), was as follows:[5] The first athlete in each heat ( Q ) and the next five fastest ( q ) qualified for the first round proper.