| Western Development Region | |
| Native Name: | Pashchimānchal Bikās Kshetra |
| Mapsize: | 450px |
| Type: | Former region |
| Subdivision Type: | Country |
| Subdivision Name: |  Nepal |
| Subdivision Type1: | Region |
| Seat Type: | Headquarter |
| Seat: | Pokhara, Kaski District, Gandaki Zone |
| Area Total Km2: | 29,398 |
| Population Total: | 4,926,765 |
| Population As Of: | 2011 Census |
| Population Density Km2: | 167.59 |
| Timezone1: | NPT |
| Utc Offset1: | +5:45 |
The Western Development Region (Nepali: पश्चिमाञ्चल विकास क्षेत्र, Pashchimānchal Bikās Kshetra) was one of Nepal's five development regions. It was located in the west-central part of the country, with its headquarters located in Pokhara. This Development Region was divided into three parts, from south to north in order of increasing altitude: Terai, Hilly and Himalayan. Mustang, Damodar, Peri, Thaple, Ganesh are among the major ranges of the Himalayas.
It comprised three zones: