| Thiruvonam | |
| Settlement Type: | town panchayat |
| 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 |
| Unit Pref: | Metric |
| Population Density Km2: | auto |
| Demographics Type1: | Languages |
| Demographics1 Title1: | Official |
| Demographics1 Info1: | Tamil |
| Timezone1: | IST |
| Utc Offset1: | +5:30 |
Thiruvonam is a Taluk town in Thanjavur district in the Indian state of Tamil Nadu
Thiruvonam is located at 10.3°N 79.1°W. It has an average elevation of 36 metres (120 feet).
A small town located south of Thanjavur, has population approximately 1000. Thiruvonam is a panchayat union comprises more than 20 small villages around and far. North East boundary of its panchayat union lies right in the suburb of Thanjavur called Mariamman Kovil. Currently, in the process of transforming itself into a separate Taluk. Mrs. Uma maheshwari being current chairman of panchayat union. Mr. T.thangadurai being the councilor of the union. History of this little town dates back to early 1000 A.D.. It was one of the important places of pilgrimage for Cholas dynasty. MuthuThangappa Football club and festival of temples of Muthumariamman are widely regarded. Thiru.Muthu Thangappa was a well known panchayat Union Chairman.
Thiruvonam assembly constituency is part of Thanjavur (Lok Sabha constituency).[1]