This volume focuses on the role of language in the construction of knowledge about HIV/AIDS in diverse regions of the world. The collection of studies yields helpful insights about the discursive construction of this knowledge in both formal and informal contexts, while demonstrating how the tools of applied linguistics can be exercised to reveal a deeper understanding of the production and dissemination of this knowledge. The authors use a range of qualitative methodologies to critically explore the role of language and discourse in educational contexts in which various and sometimes competing forms of knowledge about HIV/AIDS are constructed. They draw on various forms of discourse analysis, ethnography, and social semiotics to interpret meaning-making practices in HIV/AIDS education in Australia, Cambodia, Burkina Faso, Hong Kong, India, South Africa, Tanzania, Thailand, and Uganda.