The Big Brother Movement was one of the best known schemes of British youth migration in the 1920s. This article examines the aims of the movement, the social origins of the young males brought to Australia and the general effects of the scheme. Represented as a way to provide opportunities for land settlement, the Big Brother Movement raised issues of Empire citizenship as well as those of age relations and middle-class masculinity. The discussion thus contributes to an understanding of inter-war migration as well as the role of early twentieth-century youth movements and the making of men.