Swimming at the 1973 World Aquatics Championships – Women's 800 metre freestyle

The women's 800 metre freestyle competition of the swimming events at the 1973 World Aquatics Championships took place on 9 September.

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

The following records were established during the competition:

Results
24 swimmers participated in 3 heats. The event was a timed final. The first two heats were contested in the morning with the third and final heat contested in the evening.