In many parts of the world, migration has replaced fertility and mortality as the leading agent of demographic change. A person’s gender, age, religion, race, ethnicity, sexuality and health or disability shape every stage of the migration experience. This briefing focuses on gender and age, offering an insight into who migrates and who doesn’t, reasons for migrating, experiences of the migration process and what life is like for different groups of migrants and refugees when, and if, they reach their destinations. The briefing concludes with a set of recommendation for more gender and age sensitive policy making on migration.