Watch Hill may refer to:
- in England
- Watch Hill (Cockermouth), a 254 m Marilyn and Wainwright Outlying Fell near Cockermouth in the Lake District
- Watch Hill (Whitehaven), a 172 m hill near Whitehaven in the Lake District
- Watch Hill (North Pennines), a 604 m hill near Renwick in Cumbria
- Watch Hill Castle, a medieval fortification in Greater Manchester
- in the United States
- Watch Hill (Massachusetts), a 11 m hill on Cape Cod
- Watch Hill, New York, a campground and marina on Fire Island
- Watch Hill, Rhode Island, a neighborhood in Westerly, Rhode Island
- Watch Hill Light, a lighthouse in Watch Hill, Rhode Island