This article uses large-scale bibliographic data to extract and analyse the works, authors, and publishers of the Scottish Enlightenment. By doing so, we aim to encompass a wider scope and definition of Scottish Enlightenment publishing, contextualizing both the major and the lesser-known publishers. We reveal two competing models for key Scottish publishers: those working in Scotland, publishing works that were printed later in London; and those working in London, printing Scottish works. We show that the careers of key publishers such as Andrew Millar (1705–68) should be considered in relational terms: that Millar must be understood in the context of his wider network, taking into account a longer view of the publishing landscape both before and after his career. Moreover, we establish the relevance of subsequent editions of existing works for the understanding of eighteenth-century publishing. The article also argues for an agnostic view of the ‘Scottish Enlightenment text’, one which considers the features of individual texts rather than a priori assumptions about canonical works. Consequently, we show that the significance of works of scientific improvement evolves and becomes intertwined with education, literature, philosophy, and history over time; resulting in a convergence of practice, theory, and literary expression.