Crater (/ˈkreɪtər/; Arabic: كريتر, [ˈkɾeːtəɾ]), also Kraytar, is a district of the Aden Governorate, Yemen.

[1] The city's name, Crater, derives from the English word of the same meaning, given by the British during their colonization of Aden, which is situated on an inactive volcano.

[2] In the closing days of British rule in 1967, Crater District became the focus of the Aden Emergency, sometimes called the last imperial war.

After a mutiny of hundreds of soldiers in the South Arabian Federation Army on 20 June, all British forces withdrew from Crater.

In 3 July 1967, The Battle of Crater began with the Argyll and Sutherland Highlanders commanded by Lt-Col Colin Mitchell ("Mad Mitch") performing a night invasion of Crater, which he termed Operation Stirling Castle, after the Argylls' regimental headquarters.