The women's 800 metre freestyle event at the 2010 Asian Games took place on 17 November 2010 at Guangzhou Aoti Aquatics Centre.

There were 12 competitors from 8 countries who took part in this event.

The final ranking was arranged by the times from both heats.

Li Xuanxu and Shao Yiwen from China won the gold and silver medal respectively, Japanese swimmer Maiko Fujino won the bronze medal.

All times are China Standard Time (UTC+08:00) Prior to this competition, the existing world, Asian and Games records were as follows.