Pig War may refer to the following conflicts:

• Pig War (1555–58), or Saukrieg, a feud between the Bishop of Meissen and the family of his predecessor
• Pig War (1859), a border confrontation between the United States and the British Colony of Vancouver Island
• Pig War (1906–08), a trade war between Austria-Hungary and the Kingdom of Serbia

• Long Island Lolita Story
• Long Island Macarthur Airport
• Long Island Main, Nova Scotia
• Long Island Museum of American Art, History, and Carriages
• Long Island National Wildlife Refuge Complex
• Long Island, New York (State)
• Long Island (New Zealand)
• Long Island, New Zealand
• Long Island, Nova Scotia
• Long Island, Nunavut
• Long Island (Nunavut)
• Long Island (N.Y.)
• Longisland, NY
• Long Island Occupational and Environmental Health Center
• Long Island of the Holston
• Long Island of the Holston River
• Long Island on the Holston River
• Long Island order of battle
• Long Island, Papua New Guinea
• Long island pond (plymouth, massachusetts)
• Long Island (proposed state)
• Long Island Rail Road Lines
• Long Island Railroad Museum
• Long Island Railroad North Shore Branch
• Long Island Rail Road North Shore Branch