The women's 200 metres at the 2010 World Junior Championships in Athletics was held at the Moncton 2010 Stadium on 22 & 23 July.
Prior to the competition, the existing world junior and championship records were as follows.
No new records were established during the competition.
23 July
Wind: -0.5 m/s
Key: PB = Personal best
22 July
Wind: +1.3 m/s
Wind: +1.8 m/s
Wind: +1.6 m/s
22 July
Wind: +2.0 m/s
Wind: +0.2 m/s
Wind: +0.5 m/s
Wind: +0.7 m/s
Wind: +0.8 m/s
Wind: +0.5 m/s
According to an unofficial count, 40 athletes from 28 countries participated in the event.