Terminology on Accessible Communication has primarily evolved and been published within the borders of a given country with no or only little exchange across these borders. Since English can be regarded as the lingua franca of science, this first German–English dictionary of Accessible Communication will help to promote international exchange and an international discourse on this topic by attempting to define concepts that go beyond the scope of a single-country centered approach. The terminological work for this dictionary is based on the German Handbook of Accessible Communication. Most of the handbook’s contents are language-independent and applicable to other recipient communities. On the basis of the German terminology, the English equivalents, definitions and explanations were researched. The dictionary contributes to the development of a standardised terminology across languages and cultures.