| Cái Dầu | |
| Native Name: | Thị trấn Cái Dầu |
| Settlement Type: | Urban municipality and town |
| Pushpin Map: | Vietnam |
| Pushpin Label Position: | top |
| Pushpin Map Caption: | Location in Vietnam |
| Subdivision Type: | Country |
| Subdivision Type1: | Province |
| Subdivision Name1: | An Giang Province |
| Subdivision Type2: | District |
| Subdivision Name2: | Châu Phú District |
| Established Title: | Established |
| Established Date: | 1979 |
| Unit Pref: | Imperial |
| Area Total Km2: | 6.39 |
| Population As Of: | 1999 |
| Population Total: | 17,971 |
| Population Density Km2: | 2,812 |
| Population Blank1 Title: | Ethnicities |
| Utc Offset: | +07:00 |
| Coordinates: | 10.3603°N 105.5181°W |
Cái Dầu is an urban municipality (thị trấn thuộc huyện) and capital town of the Châu Phú District of An Giang Province, Vietnam.