The Haramain High Speed Railway (Arabic: قطار الحرمين السريع, romanized: qiṭār al-ḥaramayn as-sarīʿ, Hejazi Arabic pronunciation: [ɡɪtˤaːr alħarameːn asːariːʕ], abbreviated HHR), is a passenger railway serving the Mecca and Medina provinces in western Saudi Arabia.

The HHR has a service speed of 300 km/h (186 mph), making it the first high-speed railway in Saudi Arabia and West Asia.

[4] Construction began in March 2009 and the railway was officially inaugurated on 25 September 2018,[5] opening to the public on 11 October 2018.

[11] A 1.5-kilometre (0.93 mi) bypass line was constructed around the station to avoid disruption to services between Mecca and Medina.

[13] The Saudi Railways Organisation commissioned Dar Al-Handasah to prepare the concept design of the project.

[23] The Phase I second package covered the design of the Makkah, Madinah, Al-Sulimaniyah–Jeddah, and Airport–Jeddah stations, and was awarded in April 2009 to Foster+Partners and Buro Happold, at a price of US$38 million.

[24] Phase II of the project involved the remaining infrastructure: track, signalling, telecommunications, power, and electrification, among others.

[8] Ultimately, 36 Talgo 350 SRO trains were ordered, with one equipped with a dual hybrid coach pair for up to 20 or 30 VIPs.

[15] According to Saudi Railways Organisation the stations are "aesthetically iconic" buildings with designs which take into account Islamic architectural traditions.