WFIW may refer to:

• WFIW (AM), a radio station (1390 AM) licensed to Fairfield, Illinois, United States
• WFIW-FM, a radio station (104.9 FM) licensed to Fairfield, Illinois, United States

• Old Police Station and Courthouse
• Old Police Station and Courthouse, Coolah
• Old Police Station and Courthouse (Coolah)
• Old Police Station, The Rocks
• Old Polk County Courthouse (Bartow, Florida)
• Old Pompano Fire Station
• Old Porirua Road
• Old Portage Road (New York)
• Old Port Macquarie Courthouse
• Old Port of Montreal Corporation
• Old Port of Montreal-Longueuil Ferry
• Old Post No. 43
• Old Post Office and Courthouse
• Old Post Office and Courthouse, Auburn, New York
• Old Post Office and Courthouse (disambiguation)
• Old Post Office (Baton Rouge, Louisiana)
• Old Post Office (Biddeford, Maine)
• Old Post Office Building (Deerfield, Massachusetts)
• Old Post Office Building (Washington, D.C.)
• Old Post Office (Hot Springs, Arkansas)
• Old Post Office Pavilion
• Old Post Office, Tintagel
• Old Post Office (Watertown, South Dakota)
• Old Powder Mills
• Old Prairie Branch