city and major seaport of northeastern Libya, on the Gulf of Sidra. It was founded by the Greeks of Cyrenaica as Hesperides (Euesperides) and received from the Egyptian pharaoh Ptolemy III (Ptolemy III Euergetes) the additional name of Berenice in honour of his wife. After the 3rd century AD it superseded Cyrene and Barce as the chief centre of the region; but its importance waned, and it remained a small town until it was extensively developed during the Italian occupation of Libya (1912–42). In World War II Banghāzī suffered considerable damage, and, after changing hands five times, it was finally captured by the British in November 1942.

Banghāzī is Libya's second largest city and is an administrative, commercial, and educational centre. It is the site of several national government buildings, as well as the Gar Younis (formerly Benghāzī) University (founded 1955). Local industries include salt processing, oil refining, food processing, cement manufacturing, and tanning, brewing, and fishing. Fresh water is provided by one of the world's largest desalinization plants. Benina International Airport is 20 miles (32 km) east of the city. Roads connect Banghāzī with other Libyan centres on the Mediterranean coast. Pop. (2005 est.) 685,367.