The Men's 800 metre freestyle competition of the 2022 FINA World Swimming Championships (25 m) was held on 17 December 2022.

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

The following new records were set during this competition:

Date Event Name Nationality Time Record 17 December Final Gregorio Paltrinieri 7:29.99 CR

Results The slowest heats were started at 13:12, and the fastest heat at 19:50.

Rank Heat Lane Name Nationality Time Notes 3 4 Gregorio Paltrinieri 7:29.99 CR 3 2 Henrik Christiansen 7:31.48 3 3 Logan Fontaine 7:33.12 4 3 8 Shogo Takeda 7:33.78 AS 5 3 5 David Johnston 7:34.33 6 2 6 Joris Bouchaut 7:35.12 7 2 5 Marwan Elkamash 7:36.01 NR 8 2 7 Charlie Clark 7:37.54 9 3 7 Mack Horton 7:40.64 10 2 1 Ondřej Gemov 7:42.70 11 1 5 Carlos Garach 7:44.53 12 2 8 Kim Woo-min 7:45.29 13 2 4 Mert Kılavuz 7:47.57 14 3 1 Alexander Grant 7:48.25 15 2 2 Lucas Alba 7:49.53 NR 16 2 6 Louis Clark 7:53.36 17 1 6 Ratthawit Thammananthachote 7:55.24 NR 18 1 4 Jon Jøntvedt 7:55.93 19 1 3 Jakub Poliačik 8:05.91 20 1 1 Rodolfo Falcón 8:11.47 21 1 7 Yordan Yanchev 8:17.85 22 1 8 Lin Sizhuang 8:21.81 NR 23 1 2 Dylan Cachia 8:22.71 2 3 Victor Johansson Did not start

References