| Official Name: | Mirsarai |
| Native Name: | মীরসরাই |
| Pushpin Map: | Bangladesh |
| Pushpin Map Caption: | Location of Mirsarai in Bangladesh |
| Coordinates: | 22.5056°N 91.5722°W |
| Subdivision Type: | Country |
| Subdivision Name: |  Bangladesh |
| Subdivision Type1: | Division |
| Subdivision Name1: | Chittagong Division |
| Subdivision Type2: | District |
| Subdivision Name2: | Chittagong District |
| Subdivision Type3: | Upazila |
| Subdivision Name3: | Mirsarai |
| Government Type: | Mayor–Council |
| Governing Body: | Mirsarai Municipality |
| Leader Title: | Paura Mayor |
| Leader Name: | Md. Gias Uddin [1] |
| Established Title2: | Municipality |
| Unit Pref: | Metric |
| Area Total Km2: | 12.2 |
| Population Total: | 31,206 [2] |
| Population Density Km2: | auto |
| Population As Of: | 2011 |
| Population Blank1 Title: | Ethnicities |
| Population Blank2 Title: | Religions |
| Timezone: | Bangladesh Time |
| Utc Offset: | +6 |
| Postal Code Type: | Postal code |
| Blank Name: | National Dialing Code |
| Blank Info: | +880 |
| Blank1 Name: | Local Dialing Code |
Mirsarai (Bengali: মীরসরাই) is a town and municipality in Chattogram District of Chattogram Division, Bangladesh. The town is the headquarter and urban centre of Mirsarai Upazila.