This book examines the making and remaking of borders and boundaries primarily relating to Ireland. Borders and Boundaries features selected papers from the 33rd Irish Conference of Historians held by the University of Galway in May 2021 on the theme of 'Borders and Boundaries'. It covers the medieval to the contemporary, allowing a long view to be taken of the north-west border of Ireland, the borders of the early modern state, the impact of the partition of Ireland and social boundaries in the late twentieth century. It aims to stimulate debate and highlight how borders can be written out of history while remaining essential to comprehending the making and remaking of our worlds. This volume will be of value for those interested in border studies, Irish history and modern history.