Dhamar (Arabic: ذَمَار, romanized: Ḏamār; Old South Arabian: 𐩹𐩣𐩧 Ḏmr) is a city in south-western Yemen.

Dhamar is situated 100 km (62 miles) to the south of Sana'a, north of Ibb, and west of Al-Bayda', 2,400–2,500 m (7,900–8,200 ft) above sea level.

Its name goes back to the king of Saba' and Dhu-Raydan at 15-35 AD, whose name was Dhamar Ali Yahbir II, who is renowned for restoring the great dam of Ma’rib, and whose statue was found at the city of Al-Nakhla Al-Hamra'a ("The Red Palm").

The antique Yemeni engravings mentioned Dhamar city as being a very famous center of the Islamic studies and sciences, and many of the great scientists are attributed to this historical town.

The town is still known in Yemen for its numerous historical mosques and schools, which are distinguished by their characteristic architecture in harmony with the colours of its volcanic land.