| Sirta Union | |
| Native Name: | সিরতা ইউনিয়ন |
| Native Name Lang: | bn |
| Settlement Type: | Union |
| Pushpin Map: | Bangladesh |
| Pushpin Map Caption: | Location in Bangladesh |
| Subdivision Type: | Country |
| Subdivision Name: | Bangladesh |
| Subdivision Type1: | Division |
| Subdivision Name1: | Mymensingh Division |
| Subdivision Type2: | District |
| Subdivision Name2: | Mymensingh District |
| Subdivision Type3: | Upazila |
| Subdivision Name3: | Mymensingh Sadar Upazila |
| Government Type: | Union council |
| Unit Pref: | Metric |
| Population As Of: | 2001 |
| Population Total: | 31,485 |
| Population Density Km2: | auto |
| Timezone1: | BST |
| Utc Offset1: | +6 |
| Postal Code Type: | Postal code |
Sirta Union (Bengali: সিরতা ইউনিয়ন) is a union parishad in Mymensingh Sadar Upazila of Mymensingh District, in Mymensingh Division, Bangladesh. It has an area of 7357 acres.[1]
As of the 2001 census, the union had a population of 31,485.[2]