Finswimming at the 2009 World Games – Women's 400 m surface

The women's 400 m surface competition in finswimming at the 2009 World Games took place on 24 July 2009 at the Kaohsiung Swimming Pool in Kaohsiung, Taiwan.

Competition format
A total of 13 athletes entered the competition. The best eight athletes from preliminary round qualifies to the final.