| Dhanau | |
| Settlement Type: | Tehsil |
| Pushpin Map: | India Rajasthan#India |
| Pushpin Label Position: | right |
| Pushpin Map Caption: | Location in Rajasthan, India |
| Subdivision Type: | Country |
| Subdivision Name: |  India |
| Subdivision Type1: | State |
| Subdivision Name1: | Rajasthan |
| Subdivision Type2: | District |
| Subdivision Name2: | Barmer district |
| Government Type: | Democratic |
| Unit Pref: | Metric |
| Elevation M: | 134 |
| Population Total: | 10,112 |
| Population As Of: | 2011 |
| Population Density Km2: | auto |
| Demographics Type1: | Languages |
| Demographics1 Title1: | Official |
| Demographics1 Info1: | Hindi |
| Timezone1: | IST |
| Utc Offset1: | +5:30 |
| Registration Plate: | Rj 04 |
| Blank1 Name Sec1: | Nearest city |
Dhanau is a Tehsil and block of Barmer district in Rajasthan, northern India.