Mersa Matruh (Arabic: مرسى مطروح, IPA: [ˈmæɾsæ mɑtˤˈɾuːħ]) is a port in Egypt, capital of Matrouh Governorate. It is 240 km (150 mi) west of Alexandria and 222 km (138 mi) from Sallum on the main highway from the Nile Delta to the Libyan border. Another highway leads south from the town, toward the Western Desert and Siwa Oasis and Bahariya Oasis.
In ancient Egypt and during the reign of Alexander the Great, the city was known as Amunia. In the Ptolemaic Kingdom and later during the Byzantine Empire, it was known as Paraitónion (Koinē Greek: Παραιτόνιον), and during the Roman Empire, it was called Paraetonium in Latin, which became Al-Baretoun (Arabic: البارتون) after the Arab conquest of Egypt. As a British military base during World War II, several battles were fought around its environs as the German Afrika Korps attempted to capture the port. It fell to the Germans during the Battle of Mersa Matruh, but was recaptured following the Second Battle of El Alamein.
Marsa Matruh is served by Marsa Matruh International Airport. The city features soft white sand beaches and calm transparent waters; the bay is protected from the high seas by a series of rocks forming a natural breakwater, with a small opening to allow access for light vessels.