| Official Name: | Tajjar Akbar |
| Native Name: | تجراكبر |
| Settlement Type: | village |
| Pushpin Map: | Iran |
| Mapsize: | 150px |
| Subdivision Type: | Country |
| Subdivision Type1: | Province |
| Subdivision Name1: | Kermanshah |
| Subdivision Type2: | County |
| Subdivision Name2: | Eslamabad-e Gharb |
| Subdivision Type3: | Bakhsh |
| Subdivision Name3: | Central |
| Subdivision Type4: | Rural District |
| Subdivision Name4: | Howmeh-ye Jonubi |
| Population As Of: | 2006 |
| Population Total: | 596 |
| Population Density Km2: | auto |
| Timezone: | IRST |
| Utc Offset: | +3:30 |
| Timezone Dst: | IRDT |
| Utc Offset Dst: | +4:30 |
| Coordinates: | 34.0392°N 46.6122°W |
Tajjar Akbar (Persian: تجراكبر; also known as Mūsh Kosh and Tajjar Akbar-e Mūsh Kosh) is a village in Howmeh-ye Jonubi Rural District, in the Central District of Eslamabad-e Gharb County, Kermanshah Province, Iran. At the 2006 census, its population was 596, in 136 families.