This Discussion Paper explores Nigeria's human development aid to Africa, Caribbean and Pacific countries under its international volunteer programme called the Technical Aid Corps (TAC). It critically examines the relationship between participation in international civic service and civic nationalism. Using a combination of empirical and analytical methods, the author is able to provide insights into the impact of two decades of Nigeria's aid diplomacy within the context of South-South solidarity and into the inculcation of values linked to globally oriented citizenship in TAC volunteers. The findings of this study are of value to those interested in emerging African development cooperation in the global South and the expanding notions of citizenship beyond borders. Scholars, development actors and policy-makers will find this study refreshingly different and highly informative.