We are very pleased to present the proceedings of PACLING 2015: The 2015 Conference of the Pacific Association for Computational Linguistics. The conference was held at The Stones Hotel, Legian, Bali, Indonesia, during May 19–21, 2015. In all, 45 papers were submitted to the conference, of which 18 were accepted as long papers and 16 as short papers. This volume contains the 18 long papers.

The conference provided opportunities for participants to present and discuss their recent achievements and ongoing developments in a wide range of topics such as syntax, semantics, spoken language, dialogue, corpora, message understanding, text mining, information retrieval, language learning, and machine translation. In addition to the submitted contributions, the conference featured two keynote talks. Dr. Dwi Hendratmo Widyantoro gave a talk entitled “Summarization of Multiple Scientific Text: Approaches, Challenges, and Opportunities” and Prof. Chu-Ren Huang’s talk was on “Ontology, Language, and Lexicon.” These proceedings do not contain the details of these talks, but they were fruitful in introducing recent advances in the respective subfields of computational linguistics.