Petaling Jaya, colloquially referred to as "PJ", is a city in Petaling District, in the state of Selangor, Malaysia. Originally developed as a satellite township for Kuala Lumpur, the capital of Malaysia, it is part of the Greater Kuala Lumpur area. Petaling Jaya was granted city status on 20 June 2006. It has an area of approximately 97.2 square kilometres (37.5 sq mi).

Subang Jaya is a city in Petaling District, Selangor, Malaysia. It comprises the southern third district of Petaling. It consists of the neighbourhoods from SS12 to SS19, UEP Subang Jaya (USJ), Putra Heights, Batu Tiga as well as PJS7, PJS9 and PJS11 of Bandar Sunway, the latter of which are partially jurisdictional within Petaling Jaya under the MBPJ. The city is governed by Subang Jaya City Council (MBSJ), which also governs other areas of the Petaling district, such as Puchong and Seri Kembangan. According to Subang Jaya City Council, Subang Jaya has a population of 968,930 in 2020, which makes it the sixth largest city in Malaysia by population.