This chapter introduces thematic analysis (TA), a method that has become a widely-used tool for analysing qualitative data, both in psychology and beyond. We first outline the history and context of TA, and identify key issues that need to be considered when conducting TA. We discuss the flexibility TA can offer, and highlight the need for deliberate and careful research. This flexibility can apply to theoretical assumptions, research questions, data collection and analysis. We include a detailed worked demonstration of the processes and procedures of undertaking a TA, illustrated with examples from Nikki Hayfield, Victoria Clarke, Sonja Ellis and Gareth Terry's research on the lived experiences of childfree women (see Box 2.1). Our discussion of how to complete a TA is based on a widely used version of TA – the approach developed by Virginia Braun and Victoria Clarke (2006). We conclude by considering the limitations and applications of TA, as well as future directions.