This paper introduces a series of contributions on public slavery in the Roman and the Modern and Early-Modern World, which are collected in a special thematic issue of the Bulletin of the Institute of Classical Studies (BICS 64-2). The volume stems from an international conference entitled ‘Being Everybody’s Slaves: Public Slavery in Ancient and Modern World’, which was held at Newcastle University on 22–4 March 2018. The event was part of the ‘Servi Publici: Everybody’s Slaves (SPES)’ research project that was based at Newcastle University from 2016 to 2018 and received funding under a Marie Skłodowska-Curie Individual Fellowship (H2020-MSCA-IF-2015, grant agreement no. 704716). The aim of this introduction is to frame the issue of public...