Swimming at the 1973 World Aquatics Championships – Women's 4 × 100 metre medley relay
The women's 4 × 100 metre medley relay competition of the swimming events at the 1973 World Aquatics Championships took place on September 4.
Records
Prior to the competition, the existing world and championship records were as follows.The following records were established during the competition:
| Date | Event | Nation | Athletes | Time | Record |
| 4 September | Heat | 4:25.879 | CR | ||
| 4 September | Final | Ulrike Richter Renate Vogel Rosemarie Kother Kornelia Ender | 4:16.844 | WR |
Results
Heats
13 teams participated in 2 heats.| Rank | Heat | Lane | Nation | Athletes | Time | Notes |
| 1 | 1 | - | 4:25.879 | Q, CR | ||
| 2 | 2 | - | 4:26.889 | Q | ||
| 3 | 2 | - | 4:29.029 | Q | ||
| 4 | 1 | - | 4:30.390 | Q | ||
| 5 | 2 | - | 4:32.048 | Q | ||
| 6 | 2 | - | 4:33.745 | Q | ||
| 7 | 1 | - | 4:34.051 | Q | ||
| 8 | 1 | - | 4:34.477 | Q | ||
| 9 | 1 | - | 4:35.702 | |||
| 10 | 1 | - | Margaret Kelly Joanne Atkinson | 4:37.101 | ||
| 11 | 2 | - | 4:37.511 | |||
| 12 | 2 | - | 4:43.651 | |||
| 13 | 2 | - | 4:50.198 |
Final
The results of the final are below.| Rank | Lane | Nation | Athletes | Time | Notes |
| - | Ulrike Richter Renate Vogel Rosemarie Kother Kornelia Ender | 4:16.844 | WR | ||
| - | Melissa Belote Marcia Morey Deena Deardurff Shirley Babashoff | 4:25.804 | |||
| - | Angelika Grieser Petra Nows Gudrun Beckmann Jutta Weber | 4:26.576 | |||
| - | Enith Brigitha Alie te Riet A. Segaar Veronica Stel | 4:28.860 | |||
| - | Wendy Cook Mary Stewart Patti Stenhouse Gail Amundrud | 4:29.608 | |||
| - | Diana Olsson Britt-Marie Smedh Gunilla Andersson Eva Andersson | 4:30.596 | |||
| - | I. Golovanova Lyubov Rusanova Aleksandra Meerzon L. Kobsova | 4:33.385 | |||
| - | Linda Young Beverley Whitfield Debra Cain Suzy Anderson | 4:34.457 |