Aaron R. Williams is a lead data scientist for statistical computing in the Tax and Income Supports​ Division at the Urban Institute. He works on data privacy, data imputation, microsimulation modeling, and survey analysis with a focus on income, wealth, tax, and retirement policies.

Williams has developed systems for safely releasing administrative data for research, including the Urban-Brookings Tax Policy Center's synthesis of individual tax records and the US Department of Labor's Safe Transfer, Restricted-Use Data Lake. He is a member of the Bureau of Labor Statistics Technical Advisory Committee, an adjunct professor in the McCourt School of Public Policy at Georgetown University, and the leader of Urban's R Users Group.

Williams holds a BS in economics from Virginia Commonwealth University, a BA in music from Virginia Commonwealth University, and an MS in mathematics and statistics from Georgetown University.