The phenomena of global ageing and intensive population movements overlap. Both migrants and older people are heterogeneous groups and this multiplied heterogeneity of older migrants causes them to be invisible when gathering various data types. Their needs are not recognised, leaving them vulnerable to human rights violations. Thus, migration in older age and ageing outside the home country are also issues of international human rights law. However, older migrants often escape international human rights regulations and determining the obligations of states to respect, protect and fulfil the human rights of older people "on the move" is very difficult. Therefore, this book aims to identify international norms protecting (at least potentially) older migrants and indicate interpretative tools to improve the ability of international human rights law, and consequently, national laws, to respond to the vulnerabilities of older migrants.