Irish people have had a long and complex engagement with the lands and waters encompassing the Pacific world. As the European presence in the Pacific intensified from the late eighteenth century, the Irish entered this oceanic space as beachcombers, missionaries, traders, and colonizers. During the nineteenth century, economic distress in Ireland and rapid population growth on the Pacific Ocean's eastern and western shores set in motion large-scale migration that exerted a deep political, social, and economic impact across the Pacific. Malcolm Campbell examines the rich history of Irish experiences on land and at sea, offering new perspectives on migration and mobility in the Pacific world and of the Irish role in the establishment and maintenance of the British Empire. This volume investigates the extensive transnational connections that developed among Irish immigrants and their descendants across this vast and unique oceanic space, ties that illuminate how the Irish participated in the making of the Pacific world and how the Pacific world made them.