2010 World Junior Championships in Athletics – Women's 100 metres

The women's 100 metres at the 2010 World Junior Championships in Athletics was held at the Moncton 2010 Stadium on 20 & 21 July.

Records
Prior to the competition, the existing world junior and championship records were as follows.

No new records were established during the competition.

Final
21 July Wind: -0.7 m/s

Semifinals
21 July

Semifinal 1
Wind: +1.7 m/s

Semifinal 2
Wind: +1.6 m/s

Semifinal 3
Wind: +1.2 m/s

Heats
20 July

Heat 1
Wind: +0.3 m/s

Heat 2
Wind: +0.2 m/s

Heat 3
Wind: +0.2 m/s

Heat 4
Wind: +0.1 m/s

Heat 5
Wind: 0.0 m/s

Heat 6
Wind: +0.3 m/s

Participation
According to an unofficial count, 41 athletes from 34 countries participated in the event. • 🇦🇱 albania (1)

• 🇦🇮 anguilla (1)

• 🇦🇷 argentina (1)

• 🇦🇺 australia (1)

• undefined (2)

• 🇧🇷 brazil (1)

• undefined (1)

• 🇨🇦 canada (1)

• 🇨🇰 cook islands (1)

• undefined (1)

• 🇩🇴 dominican republic (1)

• 🇫🇷 france (2)

• 🇩🇪 germany (2)

• 🇭🇰 hong kong (1)

• 🇭🇺 hungary (2)

• 🇮🇹 italy (1)

• 🇯🇲 jamaica (2)

• 🇯🇵 japan (1)

• undefined (1)

• undefined (1)

• 🇳🇷 nauru (1)

• undefined (1)

• undefined (1)

• undefined (1)

• 🇸🇰 slovakia (1)

• undefined (1)

• 🇰🇷 south korea (1)

• 🇪🇸 spain (1)

• undefined (1)

• 🇸🇷 suriname (1)

• undefined (1)

• 🇹🇷 turkey (1)

• undefined (2)

• 🇺🇸 united states (2)