This document provides an overview of the International Baccalaureate Diploma Programme and the role of philosophy within it. The Diploma Programme is a rigorous two-year pre-university course that encourages students to make connections between subjects and develop critical thinking skills. It comprises six academic subjects, a central core involving theory of knowledge, creativity/action/service, and an extended essay. The philosophy guide outlines the purpose, nature, aims and assessment of the philosophy course, which examines key questions about knowledge, reality, ethics and logic.