The men's 100 metres at the 2005 World Championships in Athletics was held at the Helsinki Olympic Stadium on August 6 and August 7. The winning margin was 0.17 seconds which as of 2024 is the greatest winning margin for the men's 100 metres at these championships.

The top three runners in each of the initial eight heats automatically qualified for the second round. The next ten fastest runners from across the heats also qualified. Those 32 runners competed in four heats in the second round, with the top three runners from each heat and the single next fastest runner qualifying for the semifinals. There were two semifinal heats, and only the top four from each heat advanced to the final.

Records Before the competition records were as follows:

RecordAthlete & LocationDate World record9.77Athens, Greece14 June 2005Championship record9.80 Seville, Spain 22 August 1999World Leading9.77 Athens, Greece 14 June 2005African Record9.86Lausanne, Switzerland3 July 1996Asian Record10.00Bangkok, Thailand13 December 1998North, Central American and Caribbean record9.77 Athens, Greece 14 June 2005South American Record10.00Mexico City, Mexico22 July 1988European Record9.86Athens, Greece22 August 2004Oceanian record9.93 Mito, Japan5 May 2003

Medals GoldSilverBronzeJustin GatlinMichael FraterKim Collins

Results All times shown are in seconds. Q denotes qualification by place. q denotes qualification by time. DNS denotes did not start. DNF denotes did not finish. AR denotes area record NR denotes national record. PB denotes personal best. SB denotes season's best.

Round 1 (Heats) Round 1 took place on 6 August, with the 62 athletes involved being split into 8 heats of 7 or 8 athletes each. The first 3 athletes in each heat ( Q ) and the next 8 fastest ( q ) qualified for the quarter-final.

Wind:Heat 1: +0.6 m/s, Heat 2: +0.9 m/s, Heat 3: +0.9 m/s, Heat 4: +0.4 m/s, Heat 5: 0.0 m/s, Heat 6: +0.4 m/s, Heat 7: +0.3 m/s, Heat 8: −1.4 m/s Rank Heat Name Nationality Time Notes 1 5 Leonard Scott 10.12 Q 2 2 Ronald Pognon 10.15 Q 3 Dwight Thomas 10.15 Q 4 2 Ainsley Waugh 10.16 Q, 4 Justin Gatlin 10.16 Q 6 1 Francis Obikwelu 10.17 Q 5 Uchenna Emedolu 10.17 Q 8 2 Olusoji Fasuba 10.19 Q 8 Jason Gardener 10.19 Q 10 3 Patrick Johnson 10.20 Q, 11 1 Shawn Crawford 10.23 Q 12 3 Darrel Brown 10.25 Q 6 Marlon Devonish 10.25 Q 14 1 Simone Collio 10.27 Q 15 4 Joshua Ross 10.28 Q 16 8 Aziz Zakari 10.30 Q 17 5 Jacey Harper 10.31 Q 7 Kim Collins 10.31 Q 2 Guus Hoogmoed 10.31 q 20 7 Michael Frater 10.32 Q 5 Obadele Thompson 10.32 q 22 8 Deji Aliu 10.36 Q 23 2 Lukasz Chyla 10.39 q 24 4 Nobuharu Asahara 10.40 Q 1 Nicolas Macrozonaris 10.40 q, 3 Matic Osovnikar 10.40 q 4 Mark Lewis-Francis 10.40 q 28 6 Marc Burns 10.42 Q 29 7 Idrissa Sanou 10.43 Q 30 7 Salem Mubarak Al-Yami 10.45 q 31 6 Churandy Martina 10.46 Q 32 7 Juan Sainfleur 10.47 q 33 3 Markus Pöyhönen 10.49 8 Daniel Bailey 10.49 35 5 Pierre Browne 10.50 36 4 Leigh Julius 10.51 37 8 Cláudio Roberto Souza 10.55 38 6 Tlhalosang Molapisi 10.71 39 7 Rolando Palacios 10.73 40 1 Philam Garcia 10.79 41 2 Shameer Ayub 10.82 42 7 Wilfried Bingangoye 10.86 43 7 Darren Gilford 10.89 44 3 Souhalia Alamou 10.90 45 3 Wally Kirika 11.01 8 Fonseca Neto 11.01 47 6 Yazaldes Nascimento 11.07 48 2 Chi Kun Au 11.11 49 6 John Howard 11.24 50 6 Ali Shareef 11.44 51 4 Darrel Roligat 11.49 52 1 Derrick Atkins 11.57 8 Reginaldo Micha Ndong 11.57 54 5 Deamo Baguga 11.64 55 5 Phomma Kheuabmavong 11.83 56 1 Harmon Harmon 11.84 57 4 Daraphirit 11.85 58 1 Mariuti Uan 11.92 6 Eric Pacome N'dri 2 Khalid Brooks 3 Domeio Kabua 8 Christie van Wyk

Round 2 (Quarter-Finals) Round 2 took place on 6 August, with the 32 athletes involved being split into 4 heats of 8 athletes each. The first 3 athletes in each heat ( Q ) and the next 4 fastest ( q ) qualified for the semi-final.

Wind:Heat 1: −2.0 m/s, Heat 2: −1.2 m/s, Heat 3: +0.7 m/s, Heat 4: −1.0 m/s Rank Heat Name Nationality Time Notes 1 4 Darrel Brown 10.10 Q 2 4 Ronald Pognon 10.11 Q 3 4 Michael Frater 10.12 Q 4 4 Uchenna Emedolu 10.16 q 5 2 Leonard Scott 10.19 Q 3 Francis Obikwelu 10.19 Q 7 4 Marlon Devonish 10.20 q 8 2 Olusoji Fasuba 10.24 Q 9 3 Shawn Crawford 10.25 Q 10 1 Justin Gatlin 10.27 Q 11 1 Dwight Thomas 10.28 Q 12 2 Marc Burns 10.29 Q 13 3 Jason Gardener 10.31 Q 3 Joshua Ross 10.31 q 15 2 Kim Collins 10.32 q 16 4 Obadele Thompson 10.34 17 2 Ainsley Waugh 10.39 3 Deji Aliu 10.39 3 Jacey Harper 10.39 20 1 Aziz Zakari 10.41 Q 21 1 Patrick Johnson 10.48 2 Churandy Martina 10.48 3 Nicolas Macrozonaris 10.48 3 Matic Osovnikar 10.48 4 Salem Mubarak Al-Yami 10.48 26 2 Guus Hoogmoed 10.51 27 1 Mark Lewis-Francis 10.53 28 1 Nobuharu Asahara 10.58 29 1 Simone Collio 10.60 30 2 Juan Sainfleur 10.74 31 4 Idrissa Sanou 10.80 1 Lukasz Chyla

Semifinals The semifinals took place on 7 August, with the 16 athletes involved being split into 2 heats of 8 athletes each. The first 4 athletes in each heat ( Q ) qualified for the final.

Wind:Heat 1: +0.5 m/s, Heat 2: −1.0 m/s Rank Heat Name Nationality Time Notes 1 2 Justin Gatlin 9.99 Q 2 2 Aziz Zakari 10.00 Q 3 2 Dwight Thomas 10.06 Q 4 2 Kim Collins 10.07 Q 5 1 Leonard Scott 10.08 Q 2 Jason Gardener 10.08 7 1 Michael Frater 10.09 Q 8 1 Marc Burns 10.12 Q 9 1 Francis Obikwelu 10.13 Q 10 2 Darrel Brown 10.16 2 Uchenna Emedolu 10.16 12 2 Ronald Pognon 10.17 13 1 Olusoji Fasuba 10.18 14 1 Marlon Devonish 10.24 15 1 Joshua Ross 10.27 16 1 Shawn Crawford 10.28

Final The final started at 21:35 on 7 August.

Wind: +0.4 m/s Rank Lane Name Nationality Time Notes 5 Justin Gatlin 9.88 = 4 Michael Frater 10.05 2 Kim Collins 10.05 4 8 Francis Obikwelu 10.07 5 7 Dwight Thomas 10.09 6 3 Leonard Scott 10.13 7 1 Marc Burns 10.14 8 6 Aziz Zakari 10.20

References

External links IAAF results, round 1 IAAF results, round 2 IAAF results, semi final IAAF results, final