2012_FINA_World_Swimming_Championships_(25_m)_–_Women's_800_metre_freestyle
The women's 800 metre freestyle event at the 11th FINA World Swimming Championships (25m) took place 13 December 2012 at the Sinan Erdem Dome. This event was a timed-final where each swimmer swam just once. The top 8 seeded swimmers swam in the evening, and the remaining swimmers swam in the morning session.