West Seneca
- Country: United States
- State: New York
- Population: 44,711 (2010)
- Latitude: 42° 51' N (42.85006°)
- Longitude: 78° 48' W (-78.79975°)
- Elevation: 182 m/597 ft. above sea level
- Time zone: America/New_York (UTC -05:00); DST observed (UTC -04:00)
- Alternate names: West Seneca CDP, Limestone Hill