| Kanjanur | |
| 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 As Of: | 2001 |
| Population Density Km2: | auto |
| Demographics Type1: | Languages |
| Demographics1 Title1: | Official |
| Demographics1 Info1: | Tamil |
| Timezone1: | IST |
| Utc Offset1: | +5:30 |
Kanjanur is a village in the Thiruvidaimarudur taluk of Thanjavur district, Tamil Nadu, India. It is situated on the northern bank of the Kaveri River about 18km (11miles) north-east of Kumbakonam. It is one of the nine Navagrahasthalas of the Cauvery Delta and is famous for its Agniswarar temple dedicated to Shukra (Venus). The temple is one of the "Navagraha temples" of the Cauvery Delta. To the north of Kanjanur, are a series of low hillocks 100to high. Magnesite deposits have discovered in these hills.