These are the official results of the Men's 100 metres event at the 1991 IAAF World Championships in Tokyo, Japan. There were a total number of 77 participating athletes, with ten qualifying heats and the final held on Sunday 25 August 1991. The world record, African record, and European record were broken by Carl Lewis, Frankie Fredericks, and Linford Christie, respectively. The then world record holder Leroy Burrell also bettered his previous mark of 9.90 seconds while Ray Stewart set the Jamaican record for the event.
Existing records at the start of the event.
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