Petaling Jaya (commonly called "PJ" by locals) is a Malaysian city originally developed as a satellite township for Kuala Lumpur comprising mostly residential and some industrial areas. It is located in the Petaling district of Selangor with an area of approximately 97.2 km². On 20 June 2006, Petaling Jaya was granted a city status.

It was first developed by the British on the former 486 hectares Effingham Estate, as an answer to the problem of overpopulation in Kuala Lumpur in 1952 and has since witnessed a dramatic growth in terms of population size and geographical importance. The development of Petaling Jaya commenced in 1952 with the construction of 800 houses centered around the area currently known as “Old Town” today.

Lieutenant-General Sir Gerald Templer (then the British High Commissioner of Malaya and Petaling District council chairman) planned for Petaling Jaya to be a satellite town to prevent people from assisting the communists and the earlier housing areas were fenced off from the surrounding area. The first two main roads built in Petaling Jaya were simply called "Jalan 1" or Road 1 and "Jalan 2" or Road 2. Road 1 was later named Jalan Templer while Road 2 was named Jalan Othman.