| Bhavanisagar | |
| Settlement Type: | Town |
| Pushpin Map: | India Tamil Nadu |
| Pushpin Map Caption: | Bhavanisagar, Tamil Nadu |
| Coordinates: | 11.4792°N 77.1341°W |
| Subdivision Type: | Country |
| Subdivision Name: |  India |
| Subdivision Type1: | State |
| Subdivision Name1: | Tamil Nadu |
| Subdivision Type2: | District |
| Subdivision Name2: | Erode |
| Unit Pref: | Metric |
| Elevation M: | 285 |
| Population Total: | 4156 |
| Population As Of: | 2001 |
| Population Density Km2: | auto |
| Demographics Type1: | Languages |
| Demographics1 Title1: | Official |
| Demographics1 Info1: | Tamil |
| Timezone1: | IST |
| Utc Offset1: | +5:30 |
| Registration Plate: | TN-36 |
Bhavanisagar is a panchayat town in Erode district in the state of Tamil Nadu, India. It is the main town in Bhavanisagar block.
India census,[1] Bhavanisagar had a population of about 4,000. Males constitute 51% of the population and females 49%. Bhavanisagar has an average literacy rate of 64%, higher than the national average of 59.5%; with male literacy of 73% and female literacy of 54%. 9% of the population is under 6 years of age.
Bhavanisagar(SC) assembly constituency is part of Nilgiris (Lok Sabha constituency) since 2008.
Civil Service Training Institute: This Institute is intended for the newly appointedGovt.Servants in State Ministerial Service for all Departments in the state. A sprawling nearly 20 acre campus is allotted for this from the year 1974. So also a statewide Training Institute is run by the Rural Development Department to impart seasonal training to Rural Development Department Employees.