Rayong (, ) is a city ("thesaban nakhon") on the east coast of the Gulf of Thailand and the capital of Rayong Province. It covers tambons Tha Pradu and Pak Nam and parts of "tambons" Choeng Noen and Noen Phra, all within Mueang Rayong District. As of 2016 the population was 64,256 (est.). The main industry is fishing, and it is also the main producer of Thailand's fish sauce. It is also the center of the chemical and auto industries. In 2012 Ford Motor Company opened an assembly plant in Rayong to expand Ford's presence in the ASEAN area, employing some 2,200 people.