Globally, humanitarian needs have reached an historically unprecedented scale, undermining the ability of affected children to survive, grow, and thrive. Social protection holds the promise of addressing acute needs and risks faced by children in crisis contexts, while allowing for human capital investments. We review evidence of the impact of emergency cash, food, and other in-kind transfers implemented by governments or humanitarian actors on child development in different contexts. Compared with development settings, rigorous evidence for crises is limited.