This article explores the reconfiguration of world poetics by the Iranian poet and translator Ahmad Shamlu (1925-2000). Working at the intersection of global modernism and translation studies, we trace the formation of a Persian modernist poetics of solidarity on the basis of translations from so-called third world literatures and show how Shamlu’s political aesthetic traverses national borders to embrace ignored and marginalized poetic traditions. Instead of relying on French and other European modernisms to reinvigorate his national literature, Shamlu made available to his Iranian contemporaries a broad panorama of world literature that brought together Global Southern literatures, modernist poetics, and transnational political commitments. In tracing the literary and political forms taken by Shamlu’s global solidarity, this article develops a post-Eurocentric framework for the study of Iranian literary modernism.