Ibb (or Abb) (Arabic: إب‎) is a city in Yemen, the capital of Ibb Governorate, located about 117 km (73 mi) northeast of Mocha and 194 km (121 mi) south of Sana'a.A market town and administrative centre developed during the Ottoman occupation, it is one of the most important medium-sized cities in the country. It is situated on a mountain ridge, surrounded by fertile land. As of 2005, it had a population of 160,000.