This book constitutes the refereed post-proceedings of the 11th International Conference on Model-Driven Engineering and Software Development, MODELSWARD 2023, which took place in Lisbon, Portugal during February 19-21, 2023.The 8 full papers included in this book were carefully reviewed and selected from 41 submissions. The papers are categorized under the topical sections as follows: Applications and System Development and Modeling Languages, Tools and Architectures.