A peninsula is a geographical formation consisting of an extension of land from a larger body that is surrounded by water on three sides.

A peninsula could also be a headland, cape or spit.

Peninsulas include:

Continental Europe:

• Balkan peninsula
• Brittany
• Gallipoli of Turkey
• Iberian Peninsula (with Spain and Portugal)
• Istria
• Italy
• Jutland Peninsula in Northern Germany and southern Denmark
• Mount Athos, Greece
• Scandinavian Peninsula (with Sweden and Norway)
• Walcheren and Zuid-Beveland in the Netherlands

• Cornwall
• Gower peninsula
• Spurn
• The Lizard

• Bataan Peninsula of the Philippines
• Crimea
• Korea
• Kowloon Peninsula, in Hong Kong
• Malay Peninsula
• Qatar
• Sinai Peninsula of Egypt
• Kamchatka

• Bakassi

• Baja California, Mexico, containing the states of Baja California and Baja California Sur
• Barrio Obrero, Puerto Rico, despite its name, it is also a peninsula
• Cape Cod in Massachusetts
• Delmarva Peninsula, containing parts of Delaware, Maryland, and Virginia
• Florida Peninsula, comprising most of the state
• Labrador Peninsula
• Northern Neck, Middle Peninsula, and Virginia Peninsula, on the western shore of Chesapeake Bay in Virginia
• Olympic Peninsula in Washington
• Paraguana, Venezuela
• San Francisco Peninsula, partly separating the San Francisco Bay from the Pacific Ocean
• Upper Peninsula of Michigan and the Lower Peninsula of Michigan in the Great Lakes
• Pinellas Peninsula, separating Tampa Bay from the Gulf of Mexico, comprising Pinellas County
• Ungava Peninsula
• Yucatán Peninsula, partly separating the Gulf of Mexico from the Caribbean Sea

• Mornington Peninsula