The women's 100 metre freestyle competition at the 2023 World Aquatics Championships was held on 27 and 28 July 2023.

[1][2][3] Prior to the competition, the existing world and championship records were as follows.

[4] The heats were started on 27 July at 10:32.

[5] The swim-off to determine the first reserve was held on 27 July at 12:05.

[6] The semifinals were held on 27 July at 20:11.