| Kollangarai | |
| Settlement Type: | village |
| Pushpin Label Position: | right |
| Pushpin Map Caption: | Location in Tamil Nadu, India |
| Subdivision Type: | Country |
| Subdivision Name: |  India |
| Subdivision Type1: | State |
| Subdivision Name1: | Tamil Nadu |
| Subdivision Type2: | District |
| Subdivision Name2: | Thanjavur |
| Leader Title: | Panchayat President |
| Unit Pref: | Metric |
| Population Total: | 1900 |
| Population As Of: | 2001 |
| Population Density Km2: | auto |
| Demographics Type1: | Languages |
| Demographics1 Title1: | Official |
| Demographics1 Info1: | Tamil |
| Timezone1: | IST |
| Utc Offset1: | +5:30 |
Kollangarai is a village in the Thanjavur taluk of Thanjavur district, Tamil Nadu, India.
As per the 2011 census, Kollangarai Vallundanpattu had a total population of 2191 with 1093 males and 1098 females. The sex ratio was 1005 and a literacy rate of 69.42%.[1]