| Official Name: | Tazehnab-e Mohammad Baqer |
| Native Name: | Persian: تازهناب محمدباقر |
| Settlement Type: | village |
| Pushpin Map: | Iran |
| Mapsize: | 150px |
| Subdivision Type: | Country |
| Subdivision Type1: | Province |
| Subdivision Name1: | Hamadan |
| Subdivision Type2: | County |
| Subdivision Name2: | Nahavand |
| Subdivision Type3: | Bakhsh |
| Subdivision Name3: | Central |
| Subdivision Type4: | Rural District |
| Subdivision Name4: | Shaban |
| Population As Of: | 2006 |
| Population Total: | 18 |
| Population Density Km2: | auto |
| Timezone: | IRST |
| Utc Offset: | +3:30 |
| Timezone Dst: | IRDT |
| Utc Offset Dst: | +4:30 |
| Coordinates: | 34.1069°N 48.3064°W |
Tazehnab-e Mohammad Baqer (Persian: تازهناب محمدباقر, also Romanized as Tāzehnāb-e Moḩammad Bāqer; also known as Pīr Ḩayāmī (Persian: پیرحیامی)) and Pīr Ḩayātī (Persian: پیرحیاتی)) is a village in Shaban Rural District, in the Central District of Nahavand County, Hamadan Province, Iran. At the 2006 census, its population was 18, in 4 families.