The 5th WCQR took place from 20 to 22 January 2021, in online version, motivated by the COVID-19 pandemic. For WCQR2021, the submission of scientific works was encouraged and focused on I) Qualitative Research in Health (emphasis on the processes of research in the fields of Medicine, Nursing, Geriatrics, Gerontology, Psychology, etc.); ii) Qualitative Research in Education (emphasis on the processes of research in various areas of Higher Education, Basic Education, Assessment, Curriculum, Teaching, Teaching of Sciences, Languages, History, Technology, etc.); iii) Qualitative Research in Social Science (emphasis on the processes of research in the fields of Communication, Linguistics, Sociology, Anthropology, Business Administration, Marketing, Management and Economics, Political Science, etc.): iv) Qualitative Research in Engineering and Technology (emphasis on the research processes in the areas of Computer Science, Information Systems, Electrical Engineering, Software Engineering, civil Engineering and Engineering Education).