# Swimming at the 1948 Summer Olympics

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

## Medal table

| 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) | Totals (7 entries) | 11 | 11 | 11 | 33 |

## Medal summary
### Men's events

| Games | Gold | Gold | Silver | Silver | Bronze | 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 |

### Women's events

| Games | Gold | Gold | Silver | Silver | Bronze | 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 |

## Participating nations

249 swimmers from 34 nations competed.
| Argentina (17)  Australia (10)  Austria (2)  Belgium (6)  Bermuda (5)  Brazil (13)  Canada (9)  China (1)  Colombia (2) | Cuba (2)  Czechoslovakia (3)  Denmark (6)  Egypt (6)  Finland (1)  France (17)  Great Britain (25)  Greece (2) | Hungary (15)  Iceland (8)  India (7)  Mexico (9)  Netherlands (12)  New Zealand (1)  Norway (1)  Pakistan (4) | Philippines (3)  Portugal (1)  South Africa (3)  Spain (6)  Sweden (8)  Switzerland (8)  United States (28)  Uruguay (2)  Yugoslavia (6) |