Proton (automobile)
 Proton Holdings Berhad (stylized PROTON) is a Malaysian automobile manufacturer. It is headquartered in Shah Alam Selangor and operates an additional manufacturing plant in Tanjung Malim Perak. The company was established in 1983 as the sole national car company until the advent of Perodua in 1993. Proton is a Malay acronym for Perusahaan Otomobil Nasional Sendirian Berhad.