am -- Vietnam

Northwest Passages -- Arctic Ocean

North Yemen (Yemen Arab Republic) -- Yemen

Norwegian Sea -- Atlantic Ocean

Nouakchott [US Embassy] -- Mauritania

Noumea -- New Caledonia

Novaya Zemlya -- Russia

Nuku'alofa -- Tonga

Nuevo Laredo [US Consulate] -- Mexico

Nuuk (Godthab) -- Greenland

Nyasaland -- Malawi

O

Oahu -- United States

Ocean Island (Banaba) -- Kiribati

Ocean Island (Kure Island) -- United States

Ogaden -- Ethiopia; Somalia

Oil Islands (Chagos Archipelago) -- British Indian Ocean Territory

Okhotsk, Sea of -- Pacific Ocean

Okinawa -- Japan

Oman, Gulf of -- Indian Ocean

Ombai Strait -- Pacific Ocean

Oran -- Algeria

Oranjestad -- Aruba

Oresund (The Sound) -- Atlantic Ocean

Orkney Islands -- United Kingdom

Osaka-Kobe [US Consulate General] -- Japan

Oslo [US Embassy] -- Norway

Otranto, Strait of -- Atlantic Ocean

Ottawa [US Embassy] -- Canada

Ouagadougou [US Embassy] -- Burkina

Outer Mongolia -- Mongolia

P

Pacific Islands, Trust Territory -- Palau of the

Pagan -- Northern Mariana Islands

Pago Pago -- American Samoa

Palawan -- Philippines

Palermo -- Italy

Palk Strait -- Indian Ocean

Pamirs -- China; Tajikistan

Panama [US Embassy] -- Panama

Panama Canal -- Panama

Panama, Gulf of -- Pacific Ocean

Papeete -- French Polynesia

Paramaribo [US Embassy] -- Suriname

Parece Vela -- Japan

Paris [US Embassy, US Mission to the Organization for Economic
Cooperation and Development (OECD), US Observer Mission at the UN
Educational, Scientific, and Cultural Organization (UNESCO)] --
France

Pascua, Isla de (Easter Island) -- Chile

Passion, Ile de la -- Clipperton Island

Pashtunistan -- Afghanistan; Pakistan

Peking (Beijing) -- China

Peleliu -- Palau

Pemba Island -- Tanzania

Pentland Firth -- Atlantic Ocean

Perim -- Yemen

Perouse Strait, La -- Pacific Ocean

Persian Gulf -- Indian Ocean

Perth [US Consulate General] -- Australia

Pescadores -- Taiwan

Peshawar [US Consulate] -- Pakistan

Peter I Island -- Antarctica

Philip Island -- Norfolk Island

Philippine Sea -- Pacific Ocean