- Unity, Sullivan County, New Hampshire, United States1
- Upper Dublin Township, Montgomery County, Pennsylvania, United States1
- Ut' Mines, Ut', S'dermanland, Sweden1
- Vermont, United States1
- Vulcano Island, Sicily, Italy1
- Vychodocesky, Czech Republic1
- Wales, United Kingdom1
- Wallis (Valais), Switzerland1
- Warwick, Chester County, Pennsylvania, United States1
- Washington County, Georgia, United States1
- Waynesboro, Franklin County, Pennsylvania, United States1
- Weardale, North Pennines, County Durham, England, United Kingdom1
- Weir's Cave, Augusta County, Virginia, United States1
- Westfield, Hampden County, Massachusetts, United States1
- Weyer's Cave (Weir's Cave), Augusta County, Virginia, United States1
- Weymouth Furnace, Egg Harbor, Atlantic County, New Jersey, United States1
- Whitby, North Yorkshire, England, United Kingdom1
- Wigan, Lancashire, England, United Kingdom1
- Wilkes Barre, Luzerne County, Pennsylvania, United States1
- Wilmington,New Castle County, Delaware, United States1