Taiz (Arabic: تَعِزّ, romanized: Taʿizz) is a city in southwestern Yemen. It is located in the Yemeni highlands, near the port city of Mocha on the Red Sea, at an elevation of about 1,400 metres (4,600 ft) above sea level. It is the capital of Taiz Governorate. As of 2023, the city has an estimated population of approximately 940,600 residents making it the third largest city in Yemen.
Due to the ongoing campaign as part of Yemen's civil war, Taiz is currently a battleground and a war zone.
The first reference to Taiz in historical sources dates back to the first half of the 12th century CE, when the sultan of the Sulayhid dynasty, Abdullah bin Muhammad al-Sulayhi, built the Cairo Castle. Taiz first became an urbanized area during the days of his brother Ali bin Muhammad al-Sulayhi.