This book constitutes the proceedings of the Third International Conference on Technology and Innovation in Learning, Teaching and Education, TECH-EDU 2022, was held in Lisbon, Portugal, in August/September 2022. The 21 full papers and 18 short paper presented in this volume were carefully reviewed and selected from 80 submissions. The papers are organized in the following topical sections: Emergent technologies in education; Online learning and blended learning; Computer science education and STEM; Digital tools and STEM learning; ICT and critical thinking in higher education; Digital transformation in higher education; Artificial Intelligence in Education.