| Udayanatham | |
| Pushpin Label Position: | right |
| Pushpin Map Caption: | Location in Tamilnadu, India |
| Subdivision Type: | Country |
| Subdivision Name: |  India |
| Subdivision Type1: | State |
| Subdivision Name1: | Tamil Nadu |
| Subdivision Type2: | District |
| Subdivision Name2: | Ariyalur |
| Governing Body: | Lok sabha |
| Unit Pref: | Metric |
| Population Total: | 1486 |
| Population As Of: | 2001 |
| Population Density Km2: | auto |
| Demographics Type1: | Languages |
| Demographics1 Title1: | Official |
| Demographics1 Info1: | Tamil |
| Timezone1: | IST |
| Utc Offset1: | +5:30 |
| Postal Code: | 04331 |
| Registration Plate: | TN-61 |
| Blank1 Name Sec1: | Coastline |
| Blank1 Info Sec1: | 0km (00miles) |
| Blank2 Name Sec1: | Sex ratio |
| Blank2 Info Sec1: | .997 ♂/♀ |
| Blank3 Name Sec1: | Literacy |
| Blank3 Info Sec1: | 77.30% |
Udayanatham (East) is a village in the Udayarpalayam taluk of Ariyalur district in the Indian state of Tamil Nadu.
The local government consists of the Jayankondam assembly constituency and the Chidambaram (Scheduled Caste) parliamentary assembly.
Government High Sec School is there.
A government hospital is there.
Government-owned businesses include State Bank Of India, Primary Agriculture Company Bank, Hand Loom Weaver Society, Rani Mahal (Marriage Hall).Other local businesses include grocery stores, tea stalls, a hardware store, mortgage stores, a small mechanic shop, small medical facilities, and a bakery.[1]
Pujas and festivals are held on a regular basis.