A map of Tihamah region of the western Arabian Peninsula in green
Tihamah or Tihama (Arabic: تهامة Tihāmah) refers to Red Sea coastal plain of Arabia from the Gulf of Aqaba to the Bab el Mandeb Strait.
The region is subdivided into two parts, Tihamat Al-Hejaz (northern part) and Tihamat ʿAsir (southern part). The Yemeni part (Tihamat Al-Yaman) is an extension of Tihamat ʿAsir. The plain is constricted and attains its greatest widths (60 to 80km) south of Medina and south of Mecca.
The cities of Yanbu, Jeddah and Al Qunfudhah are located in the Hejazi part of Tihamah. The Asiri part of the Tihamah plain includes the cities of Jizan and Al Hudaydah.
The temperatures in Tihamah are probably some of the hottest on earth. Tihamah in Arabic means severe heat and lack of wind. 
Over sixteen megalithic standing stones were discovered by Edward Keall, director of the Royal Ontario Museum's Canadian Archaeological Mission near the village of al-Mutaynah in the Tihamah area. The stones were made of granite and weighted up to 20 tonnes (20,000 kg). Three of the upright sotones measured around 8 feet (2.4 m) tall with one fallen being over 20 metres (66 ft) in length. Copper tools suggested to date to the same era as the construction of the stones were dated to around 2400 to 1800 BCE. An even more archaic lithic industry was found along with pottery sherds that were dated between 1200 to 800 BCE.
- ^ a b c "Arabia", on Encyclopaedia Britannica. Retrieved 20 March 2013 :
The Red Sea coastal plain is constricted throughout its length, attaining its greatest widths, 40 to 50 miles, south of Medina and south of Mecca. The name Tihāmah, used for the whole plain, is sometimes subdivided into Tihāmat Al-Ḥijāz and Tihāmat ʿAsīr.
- ^ "Yemen", on Encyclopaedia Britannica. Retrieved 20 March 2013 :
Yemen may be divided into five major regions: a coastal plain running north-south known as the Tihāmah (an extension of the Tihāmat ʿAsīr), the western highlands, the central mountains (the Yemen Highlands), the eastern highlands, and finally the eastern and northeastern desert regions.
- ^ Dr. Shawqi Abu Khalil (2004). Atlas on the prophet's Biography. Darussalam. p. 31. ISBN 9960897710. Retrieved 20 March 2013. :
It is so called because of its severe heat and lack of wind, from the word At-Taham which refers to extreme heat and lack of wind.
- ^ Harrington, Spencer., Yemeni Megaliths, Archaeology, the Archaeological Institute of America, December 10, 1997