This edited book project began in 2021 with an invitation from Edward Elgar Publishing to produce a 'Sociology of Youth' handbook. At the time we were in the midst of the COVID-19 pandemic. As scholars working in Australia (Melbourne and Sydney), we were in lockdowns: working from home and trying desperately to make do, while also considering the implications of that moment for young people there and around the world. For young people, as for us all, the pandemic produced dramatic changes to our lives as it affected how we worked (or didn't work), engaged in education, socialised, exercised, and accessed goods and services, and how we understood the world in which we lived. During those years, young people had little if any say, and were among the least considered by governments and policy makers. So, when considering the need for a research handbook on the Sociology of Youth, we thought: 'what a good idea'. Now, more than ever, we need better ways of describing and explaining what young people are experiencing -and what that might mean for the planet.In the last 30 years, the Sociology of Youth has grown in exciting and important ways, partly in response to a confluence of ecological, economic, social and political disruptions impinging on young people's lives (Wyn, 2020). Unsurprisingly, young people have responded: driving significant social movements committed to challenging inequality, state violence and discrimination, and climate change. This Research Handbook on the Sociology of Youth provides a way to bring research and young people's perspective to the fore as we struggle across the planet to respond to intersecting crises and make a better and more viable world.Another benefit of such a handbook is that it provides a larger canvas than a textbook or research monograph typically does. It offers extra space that allows us to untangle the range of ways young people around the world are experiencing life, acting in and shaping the world. This is because a handbook draws on the work of dozens of people, and thus paints a view of the rich and diverse landscape of the field. Such a handbook also seemed a great opportunity to work collaboratively, to encourage relative 'new-comers' to the field to write and publish alongside more established scholars. It also provided opportunities to reflect on and add to the field with young people.As editors we were committed to having contributors from different parts of the world (i.e., the Global South and the Global North), and from a diversity of sub-fields or interdisciplinary perspectives and sites -such as people studying in universities or working in non-governmental organisations (NGOs) and community agencies -as well as young people themselves.