Klang Valley (Malay: Lembah Klang) is an area in Malaysia which is centred in Kuala Lumpur, and includes its adjoining cities and towns in the state of Selangor. A more recent alternative reference to this would be Kuala Lumpur Metropolitan Area or Greater Kuala Lumpur.
The Klang Valley is geographically delineated by Titiwangsa Mountains to the north and east and the Strait of Malacca to the west. It extends to Rawang in the northwest, Semenyih in the southeast, and Klang and Port Klang in the southwest. The conurbation is the heartland of Malaysia's industry and commerce. As of 2012, the Klang Valley is home to roughly 7.5 million people. Klang Valley is home to a large number of migrants from other states within Malaysia and foreign workers largely from Indonesia, India and Nepal.
The valley is named after the Klang River, the principal river that flows through it, which is closely linked to the early development of the area as a cluster of tin mining towns in the late 19th century. Development of the region took place largely in the East-West direction (between Gombak and Port Klang) but the urban areas surrounding Kuala Lumpur have since grown south towards the border with Negeri Sembilan and north towards Rawang.
There is no official designation of the boundaries that make up Klang Valley but it is often assumed to comprise the following areas and their corresponding local authorities:
- Federal Territory of Putrajaya
- Selangor district of Petaling
Even though the Klang Valley officially consists of separate cities and suburbs, integration between these cities is very high, with a highly developed road network and an expanding rapid transit system. Many expressways criss-cross the metropolis making cars the most convenient way to get around. However, this has led to the Klang Valley's notorious traffic jams which span whole kilometres of expressways and make driving during peak hours exhausting. Since the 1990s, new rapid transit systems, such as the Rapid KL's light rail transit (LRT) and the monorail have been developed. These systems are currently undergoing extensive expansion as a superproject, in which the two LRT lines are being extended into outlying suburbs and upgraded to fully-fledged mass rapid transit systems, and a fully new Klang Valley MRT line is being built from the southeastern suburb of Kajang to the northwestern suburb of Kota Damansara.
- 1998 Klang Valley water crisis
- Greater Kuala Lumpur
- Kuala Lumpur
- List of metropolitan areas in Asia by population
- Public Transport in Klang Valley
- Ooi Keat Gin (2009). Historical Dictionary of Malaysia. Scarecrow Press. pp. 157–158. ISBN 978-0810859555.
- "world gazetteer". Archived from the original on 2012-12-05.