| Official Name: | Mehdiabad |
| Native Name: | مهدي اباد |
| Settlement Type: | village |
| Pushpin Map: | Iran |
| Mapsize: | 150px |
| Subdivision Type: | Country |
| Subdivision Type1: | Province |
| Subdivision Name1: | Hamadan |
| Subdivision Type2: | County |
| Subdivision Name2: | Malayer |
| Subdivision Type3: | Bakhsh |
| Subdivision Name3: | Samen |
| Subdivision Type4: | Rural District |
| Subdivision Name4: | Avarzaman |
| Population As Of: | 2006 |
| Population Total: | 182 |
| Population Density Km2: | auto |
| Timezone: | IRST |
| Utc Offset: | +3:30 |
| Timezone Dst: | IRDT |
| Utc Offset Dst: | +4:30 |
| Coordinates: | 34.2714°N 48.5508°W |
Mehdiabad (Persian: مهدي اباد, also Romanized as Mehdīābād and Mahdīābād) is a village in Avarzaman Rural District, Samen District, Malayer County, Hamadan Province, Iran. At the 2006 census, its population was 182, in 54 families.