The first workshop on Creation, Harmonization and Application of Terminology resources (CHAT 2011) will be held in conjunction with the 18th Nordic Conference on Computational Linguistics.The workshop aims at bringing together academic and industrial researchers in the area of terminology and attracting young researchers to terminology issues in particular. The workshop also focuses on fostering the cooperation between EU projects and research and development activities in the area of terminology along with sharing experience and discussing recent advances of the application of terminology resources in machine translation and other natural language processing areas and use of terminology resources in the translation and localization industry.The theme of the workshop is the creation, harmonization and application of terminology resources.