How are online and social media being used in transnational spaces? This article presents empirical findings from a study of the Facebook usage among the Uyghur diaspora. We demonstrate how online identities are negotiated and developed through social media use, and in turn how the expression of identity online is contributing to Uyghur diasporic identity. Drawing upon a content analysis of Facebook sites, we attend to the construction of Uyghur ethnic identity within Facebook group sites and the ways Uyghur political identity is currently being developed online, providing insight into how Facebook is serving as a space for global, daily online interactions. The examination of discussions on Facebook sites indicates that online Uyghur identity has a youthful, emergent character, actively being explored and produced through social media use.