Volunteering research focuses predominantly on predicting participation in volunteering, proceeding from the quasi-hegemonic foundation of resource theory and dominant-status theory. Empirical research in this tradition has provided extremely robust evidence that dominant groups in society are more likely to volunteer. At the same time, it has reinforced the status quo in the production of knowledge on volunteering, thereby neglecting the clear problematic of “inequality in volunteering.” Compared to the guiding question of “participation,” the concept of “inequality” can generate a more variegated, critical, and change-oriented research agenda. With this special issue, we aim to build a “new research front” in the field of volunteering. In this introduction, we advance a novel research agenda structured around a multidimensional understanding of inequality, concomitantly delineating four central research programs focusing on (a) resources, (b) interactions, (c) governmentalities, and (d) epistemologies. We discuss the focus of these lines of research in greater detail with respect to inequality in volunteering, their main critique of dominant research on participation in volunteering, and key elements of the new research agenda.