Swimming at the 1948 Summer Olympics
Freestyle
100 m	men	women
400 m	men	women
1500 m	men
Backstroke
100 m	men	women
Breaststroke
200 m	men	women
Freestyle relay
4 × 100 m		women
4 × 200 m	men
v t e

At the 1948 Summer Olympics in London, 11 swimming events were contested, six for men and five for women.^[1] All swimming events took place at the Empire Pool. There was a total of 249 participants from 34 countries competing.^[2]

Rank	Nation	Gold	Silver	Bronze	Total
1	United States (USA)	8	6	1	15
2	Denmark (DEN)	2	2	0	4
3	Netherlands (NED)	1	0	2	3
4	Australia (AUS)	0	2	2	4
5	Hungary (HUN)	0	1	3	4
6	France (FRA)	0	0	2	2
7	Great Britain (GBR)	0	0	1	1
Totals (7 entries)		11	11	11	33

Games	Gold		Silver		Bronze
100 m freestyle details	Wally Ris  United States	57.3 (OR)	Alan Ford  United States	57.8	Géza Kádas  Hungary	58.1
400 m freestyle details	Bill Smith  United States	4:41.0 (OR)	Jimmy McLane  United States	4:43.4	John Marshall  Australia	4:47.7
1500 m freestyle details	Jimmy McLane  United States	19:18.5	John Marshall  Australia	19:31.3	György Mitró  Hungary	19:43.2
100 m backstroke details	Allen Stack  United States	1:06.4	Bob Cowell  United States	1:06.5	Georges Vallerey  France	1:07.8
200 m breaststroke details	Joe Verdeur  United States	2:39.3 (OR)	Keith Carter  United States	2:40.2	Bob Sohl  United States	2:43.9
4 × 200 metre freestyle relay details	United States (USA) Wally Ris Jimmy McLane Wally Wolf Bill Smith	8:46.0 (WR)	Hungary (HUN) Elemér Szatmári György Mitró Imre Nyéki Géza Kádas	8:48.4	France (FRA) Joseph Bernardo René Cornu Henri Padou, Jr. Alexandre Jany	9:08.0

Games	Gold		Silver		Bronze
100 m freestyle details	Greta Andersen  Denmark	1:06.3	Ann Curtis  United States	1:06.5	Marie-Louise Linssen-Vaessen  Netherlands	1:07.6
400 m freestyle details	Ann Curtis  United States	5:17.8 (OR)	Karen Harup  Denmark	5:21.2	Catherine Gibson  Great Britain	5:22.5
100 m backstroke details	Karen Harup  Denmark	1:14.4 (OR)	Suzanne Zimmerman  United States	1:16.0	Judy-Joy Davies  Australia	1:16.7
200 m breaststroke details	Nel van Vliet  Netherlands	2:57.2	Nancy Lyons  Australia	2:57.7	Éva Novák  Hungary	3:00.2
4 × 100 metre freestyle relay details	United States (USA) Marie Corridon Thelma Kalama Brenda Helser Ann Curtis	4:29.2 (OR)	Denmark (DEN) Eva Arndt Karen Harup Greta Andersen Fritze Carstensen	4:29.6	Netherlands (NED) Irma Heijting-Schuhmacher Margot Marsman Marie-Louise Linssen-Vaessen Hannie Termeulen	4:31.6

249 swimmers from 34 nations competed.^[2]

51°33′29″N 0°16′59″W / 51.5581°N 0.2830°W / 51.5581; -0.2830