This article explores ideas of belonging that gained prominence among Indian Tamils in interwar British Malaya by revisiting a transnational dialogue that has been under-represented in the community's history. Through an analysis of the developments that unfolded during and in the decade following Periyar E. V. Ramasamy's first visit to Malaya in 1929, it positions the diaspora within the politics of a reform movement that had a profound impact on Tamil cultural and political consciousness in two colonial societies. Having originated in the former Madras Presidency, the Self-Respect movement entered Malaya at a time when both societies were engulfed in momentous change. Led by the middle class, the movement's subsequent ‘Malayanization’ raised salient questions of political allegiance as it was adapted, challenged, and ultimately reapplied to India in the interest of defending the Tamil homeland. Through an analysis of the contentious loyalties that Malayan Self-Respecters encouraged, and the responses that surfaced in the process, this article will demonstrate that the movement opened up critical new discursive spaces through which the diaspora engaged with its ‘home’ and ‘host’ societies.