| Official Name: | Hajjiabad-e Shahlaei |
| Native Name: | حاجیآباد شهلایی |
| Settlement Type: | village |
| Pushpin Map: | Iran |
| Mapsize: | 150px |
| Subdivision Type: | Country |
| Subdivision Type1: | Province |
| Subdivision Name1: | Kermanshah |
| Subdivision Type2: | County |
| Subdivision Name2: | Kermanshah |
| Subdivision Type3: | Bakhsh |
| Subdivision Name3: | Mahidasht |
| Subdivision Type4: | Rural District |
| Subdivision Name4: | Mahidasht |
| Population As Of: | 2006 |
| Population Total: | 236 |
| Population Density Km2: | auto |
| Timezone: | IRST |
| Utc Offset: | +3:30 |
| Timezone Dst: | IRDT |
| Utc Offset Dst: | +4:30 |
| Coordinates: | 34.2125°N 46.9203°W |
Hajjiabad-e Shahlaei (Persian: حاجیآباد شهلایی, also Romanized as Ḩājjīābād-e Shahlā’ī; also known as Ḩājjīābād) is a village in Mahidasht Rural District, Mahidasht District, Kermanshah County, Kermanshah Province, Iran. At the 2006 census, its population was 236, consisting of 50 families.
The name Shahlaei comes from the Shahlaei family (Persian: شهلایی) which was one of the powerful of the region; they were big landlords and senior officials under the Qajar and Pahlavi dynasties.