This book constitutes the proceedings of the 14th European Conference on Modelling Foundations and Applications, ECMFA 2018, held as part of STAF 2018, in Toulouse, France, in June 2018. The 19 papers presented in this volume were carefully reviewed and selected from 45 submissions. The cover topics such as (bidirectional and unidirectional) model transformations, model management, re-engineering, modelling environments, verification and validation, and domain-specific modelling w.r.t. business processes, automotive software, and safety-critical software.