In this paper I examine the meaning of birth in the work of Agamben, Esposito, and Derrida, paying particular attention to how it operates in their analyses of citizenship and national belonging. I show that Agamben views birth as negative, Esposito proposes a positive conception, and Derrida's writings imply an understanding that is ambivalent. Then, by focusing on the phenomenon of multiple citizenship, I argue for the value of the Derridean view.