| Official Name: | Western Slovenia |
| Native Name: | Zahodna Slovenija |
| Settlement Type: | Region |
| Area Total Km2: | 8061 |
| Area Footnotes: | [1] |
| Population Total: | 933800 |
| Population Footnotes: | [2] |
| Population Density Km2: | auto |
| Demographics Type2: | GDP |
| Demographics2 Footnotes: | [3] |
| Demographics2 Title1: | Total |
| Demographics2 Info1: | €29.783 billion (2021) |
| Blank Name Sec1: | NUTS code |
| Blank Info Sec1: | SI02 |
Western Slovenia (Zahodna Slovenija) is one of the two NUTS-2 Regions of Slovenia. The region forms the western part of the country and includes the cities of Ljubljana, Koper, Kranj and Nova Gorica. It is the wealthier of the two regions of Slovenia.
Western Slovenia (SI02) is divided into the following statistical regions: