KAI Commuter Yogyakarta Line, officially the Yogyakarta Commuter Line, is a commuter rail system in Indonesia serving Greater Yogyakarta in Special Region of Yogyakarta and Greater Surakarta (Solo) in Central Java. Operated by KAI Commuter, subsidiary of the national railway company Kereta Api Indonesia (KAI), it is the first electric-powered commuter rail system in Indonesia outside of Greater Jakarta's KRL Commuterline. The single-line system replaced Yogyakarta-Solo section of diesel-powered commuter rail Prambanan Ekspres (Prameks), also operated by KAI Commuter, on 10 February 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.