| Official Name: | Western Slovakia |
| Native Name: | Západné Slovensko |
| Settlement Type: | Region |
| Area Total Km2: | 14992.4 |
| Area Footnotes: | [1] |
| Population Total: | 1826145 |
| Population Footnotes: | [2] |
| Population Density Km2: | auto |
| Demographics Type2: | GDP |
| Demographics2 Footnotes: | [3] |
| Demographics2 Title1: | Total |
| Demographics2 Info1: | €29.840 billion (2021) |
| Blank Name Sec1: | NUTS code |
| Blank Info Sec1: | SK02 |
| Blank1 Name Sec2: | HDI (2019) |
| Blank1 Info Sec2: | 0.852[4] · 2nd |
Western Slovakia (Slovak: Západné Slovensko) is one of the four NUTS-2 Regions of Slovakia. It was created at the same time as were the Nitra, Trnava and Trenčín regions. Western Slovakia is the most populated of the four regions of Slovakia and its GDP per capita is 69% of the European Union average (€20,600 per year).