| Ottu | |
| Settlement Type: | village |
| Pushpin Map: | India Haryana#India |
| Pushpin Label Position: | right |
| Pushpin Map Caption: | Location in Haryana, India |
| Coordinates: | 29.545°N 74.94°W |
| Subdivision Type: | Country |
| Subdivision Name: |  India |
| Subdivision Type1: | State |
| Subdivision Name1: | Haryana |
| Subdivision Type2: | District |
| Subdivision Name2: | Sirsa |
| Government Type: | Panchayati raj (India) |
| Unit Pref: | Metric |
| Population Density Km2: | auto |
| Demographics Type1: | Languages |
| Demographics1 Title1: | Official |
| Demographics1 Info1: | Hindi |
| Timezone1: | IST |
| Utc Offset1: | +5:30 |
| Registration Plate: | HR 24 |
| Iso Code: | IN-HR |
Ottu or Otu is a village under Tehsil Rania in the Sirsa district of Haryana state of India. The village is situated on Sirsa-Rania Road. It is the site of the Ottu barrage on the Ghaggar-Hakra River..