Mersa Matruh, also spelled Marsa Matruh, is a port in Egypt and the capital of Matrouh Governorate. It is located 240 km west of Alexandria and 222 km east of Sallum on the main highway from the Nile Delta to the Libyan border. The city is also accessible from the south via another highway running through the Western Desert towards 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. During the Roman Empire, it was called Paraetonium in Latin, which became Al-Baretun 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.
Mersa Matruh is served by Mersa Matruh International Airport.