| Event: | Women's 4 × 100 metre freestyle relay |
| Games: | 1920 Summer |
| Venue: | Stade Nautique d'Antwerp |
| Date: | August 29 |
| Competitors: | 12 |
| Nations: | 3 |
| Longnames: | yes |
| Gold: | Ethelda Bleibtrey, Irene Guest, Frances Schroth, Margaret Woodbridge |
| Goldnoc: | USA |
| Silver: | Hilda James, Constance Jeans, Grace McKenzie, Charlotte Radcliffe |
| Silvernoc: | GBR |
| Bronze: | Aina Berg, Jane Gylling, Emily Machnow, Carin Nilsson |
| Bronzenoc: | SWE |
| Prev: | 1912 |
| Next: | 1924 |
The women's 4 × 100 metre freestyle relay was a swimming event held as part of the swimming at the 1920 Summer Olympics programme. It was the second appearance of the event.
A total of twelve swimmers, representing three teams from three nations, competed in the event, which was held on Sunday, August 29, 1920. The United States women, who had already swept all six medals in the 100 metre and 300 metre event, won easily, setting a new world record. Ethelda Bleibtrey won her third gold medal.
These were the standing world and Olympic records (in minutes) prior to the 1920 Summer Olympics.
| World Record | 5:52.8 |  Belle Moore Jennie Fletcher Annie Speirs Irene Steer | Stockholm (SWE) | July 15, 1912 | |
|---|---|---|---|---|---|
| Olympic Record | 5:52.8 | Belle Moore Jennie Fletcher Annie Speirs Irene Steer | Stockholm (SWE) | July 15, 1912 |
The United States set a new world record.
| Place | width=550 | Swimmers | width=90 | Time |
|---|---|---|---|---|
| 1 | 5:11.6 WR | |||
| 2 | 5:40.8 | |||
| 3 | 5:43.6 |