This chapter introduces network analysis as multidisciplinary inquiry and discusses how network analysis can be embraced for the qualitative-quantitative study of diasporas. The chapter begins with an overview of the historical roots of network analysis and its multidisciplinary practice in contemporary scholarship. It proceeds by introducing Actor-Network Theory and the sociology of Gabriel Tarde as the paradigm's chosen philosophical and algorithmic ancestor. Distinct from similar concepts such as group or community, network as a conceptual anchor enables relational and formalist accounts of interconnections between network actors – often human to human, but also human to nonhuman. The chapter discusses the tensions between the relational and the formalist approaches to network theory and suggests how both can be operationalised to assemble digital diasporas using a variety of data types. This is accompanied by a practical discussion of the quantification of qualitative phenomena – such as diaspora – and the kind of data required for such a task. The chapter ends with a discussion of the e-Diasporas Atlas project as a case study of the quantification of diasporic networks using web data.