For centuries, African and Irish people have traversed the Atlantic, as slaves, servants, migrants and exiles, as political organizers and cultural workers. Their experiences intersected, their cultures influenced one another. They have competed over work and assimilation. Always they have been defined in relation to one another. This multi-disciplinary volume of essays explores the connections that have defined the 'Black and Green Atlantic' in culture, politics, race, and labour. It explores the relation between two historically oppressed peoples - the dispossessed and colonized Irish, forced into emigration and often indenture, and Africans captured and enslaved - whose experiences of racialization and citizenship differed utterly. The Irish became white while both slaves and free blacks were denied full citizenship and even humanity. But there were also invaluable moments of solidarity and cultural connection between them. Such moments make this volume a history of future possibilities as well as one of past antagonisms.