Prambanan Express Commuter Line or simply Prambanan Express, commonly abbreviated as Pramex and Prameks, is a commuter rail service that operates between Yogyakarta, Special Region of Yogyakarta and Kutoarjo, Purworejo Regency, Central Java in Indonesia. The service, which first operated in 1994, covers a distance of about 64 kilometers and operates using diesel multiple unit trains. It was previously serving Yogyakarta–Solo for 26 years before it was electrified in 2021.

Yogyakarta is the capital city of the Special Region of Yogyakarta in Indonesia, in the south-central part of the island of Java. As the only Indonesian royal city still ruled by a monarchy, Yogyakarta is regarded as an important centre for classical Javanese fine arts and culture such as ballet, batik textiles, drama, literature, music, poetry, silversmithing, visual arts, and wayang puppetry. Renowned as a centre of Indonesian education, Yogyakarta is home to a large student population and dozens of schools and universities, including Gadjah Mada University, the country's largest institute of higher education and one of its most prestigious.