This special issue of Canadian Journal of Sociology on ‘Contentious Mobilities’ showcases Canadian scholarship that investigates mobilities in the context of unequal power relations. Mobilities become contentious when they confront the systematic exclusion of others, advance unconventional mobile practices and defy or destabilize existing power relations. Increasingly, mobilities are contentious in relation to rapidly changing economies, societies and environments. This special issue stages an overdue encounter between the mobilities paradigm and research on sociopolitical contention. Simultaneously, this special issue addresses an empirical gap, featuring Canada as a prolific and influential site for leading-edge research. Five key themes emerge amongst the diverse papers in this issue: life and death, employment-related mobility, intersectionality/in(visibility), governance, and automobility. Further, we identify five potential topics for Canadian mobilities, including climate change, disaster, technology and travel, the good city and methods.