| Thirunagar | |
| Settlement Type: | neighbourhood |
| Pushpin Map Caption: | Location in Tamil Nadu, India |
| Coordinates: | 11.3497°N 77.7258°W |
| Subdivision Type: | Country |
| Subdivision Name: |  India |
| Subdivision Type1: | State |
| Subdivision Name1: | Tamil Nadu |
| Subdivision Type2: | District |
| Subdivision Name2: | Erode |
| Unit Pref: | Metric |
| Population Density Km2: | auto |
| Demographics Type1: | Languages |
| Demographics1 Title1: | Official |
| Demographics1 Info1: | Tamil |
| Timezone1: | IST |
| Utc Offset1: | +5:30 |
| Postal Code Type: | PIN |
| Postal Code: | 638003 |
| Area Code Type: | Telephone code |
| Area Code: | 91-424 |
| Registration Plate: | TN-86 |
Thirunagar is a residential area in the city of Erode. It is also known as Thirunagar Colony. It is 2 km from the central bus station, 5 km from Pallipalayam and 5 km from Erode Junction railway station.
It is located near Karungalpalayam in the northern part of the city.