Data is not neutral. The ways in which it is gathered, curated, analyzed, described, stored, and communicated all serve as opportunities for bias. “Who Counts?: A Symposium on Intersectional Data” offers a forum for uncovering and analyzing the ways in which data practices—particularly those that abstract and classify individuals—replicate existing inequalities and institutionalize bias. It focuses on gaps, blanks, and absences and asks what might be done to foster practices at every stage in the data lifecycle that engage and represent the full spectrum of society.