Comoros at the 2000 Summer Olympics

The following is the list of number of competitors in the Games.^[6]

Sandjema Batouli was 18 years old at the time of the Sydney Olympics and was making her only Olympic appearance.^[7][8] On 23 September, she participated in the first round of the women's 100 metres and was drawn into heat nine. She finished the race in a time of 13.58 seconds, ninth and last in her heat, and was not able to progress to the next round.^[9] In the event overall, the gold medal is vacant due to original gold medalist Marion Jones of the United States admitting to steroid use and forfeiting her medals and results from the Sydney Games.^[10][11] Officially, the medals in the event are held by Ekaterini Thanou of Greece and Tayna Lawrence (the original bronze medalist) of Jamaica sharing silver, and Merlene Ottey, also of Jamaica, the original fourth-place finisher, being awarded a bronze.^[11][12] Gold was left vacant because Thanou, the original silver medalist, had her own issue with missing a drug test at the 2004 Summer Olympics^[11][13]

Hadhari Djaffar was 21 years old at the time of these Games. He was already a veteran of the 1996 Summer Olympics, and would later go on to represent the Comoros at the 2004 Summer Olympics.^[14][15] On 22 September, he participated in the first round heats of the men's 100 metres and was drawn into heat seven. He completed the race in a time of 10.68 seconds, seventh out of nine competitors in his heat.^[16] His time was insufficient to advance, as 10.48 seconds was the slowest qualifying time.^[16] The gold medal was eventually won in 9.87 seconds by Maurice Greene of the United States, the silver was won by Ato Boldon of Trinidad and Tobago, and the bronze was earned by Obadele Thompson of Barbados.^[17][18]