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.

The Petaling District is a district located in the heart of Selangor in Malaysia. Petaling is not to be confused with the city of Petaling Jaya located in it, nor the mukim of Petaling under Subang Jaya City. The district office is located in Subang.