This article introduces a new concept called “Language Making”. The term covers all kinds of processes in which speakers or non-speakers collectively conceptualize linguistic entities. Such processes are usually perpetual, they operate based on language ideologies and attitudes, and they bring about functional and structural norms which determine the boundaries of linguistic entities such as languages, dialects or varieties. The article discusses the significance of standardization, language policy and planning, and of stakeholders and agency for processes of Language Making. Raising the question as to why a new concept is needed in the first place, the article concludes with a demarcation of Language Making from opposite processes which may be called “un-Making” of Languages.