This Sage Handbook presents an interdisciplinary collection of chapters exploring how to assess the quality of collecting and analysing qualitative data, while maintaining a focus on diversity, digital and critical approaches. The Handbook considers essential questions such as _what_ is good qualitative research? What makes qualitative research _good _research? And, how can we make qualitative research_ better _research? Contributions come from a wide array of experts, and highlight answers to questions from various disciplinary and geographical areas; from mixed methods to multimodal and online research, from specific types of data and methods to specific target groups, and from theoretical and epistemological contexts to those where funding has an impact on how research is done and assessed. Qualitative research has evolved in many respects in recent decades and has grown increasingly multidisciplinary. Research in general is facing new challenges around how to take diversity and decolonisation into account in what researchers do, as well as how to produce and communicate qualitative research quality. This Handbook offers a timely overview of such developments, and will support researchers involved in planning, designing, doing and evaluating qualitative research in developing an increased sensitivity for contemporary debates and challenges in the field. PART I PHILOSOPHIES AND EPISTEMOLOGIES OF QUALITATIVE RESEARCH QUALITY PART II DISCIPLINARY DISCOURSES OF QUALITATIVE RESEARCH QUALITY PART III QUALITATIVE RESEARCH QUALITY FOR SPECIFIC APPROACHES PART IV RETHINKING QUALITATIVE RESEARCH QUALITY FOR SPECIFIC METHODS AND DATA PART V RETHINKING STRATEGIES FOR QUALITY IN QUALITATIVE RESEARCH PART VI RETHINKING CRITERIA FOR QUALITY IN QUALITATIVE RESEARCH PART VII EXTENDING CONTEXTS AND CHALLENGES FOR QUALITATIVE RESEARCH QUALITY