Polly Ellen Trottenberg (born March 16, 1964) is dean of New York University's Wagner Graduate School of Public Service. She was previously an American government official who served as Deputy Secretary of Transportation under Pete Buttigieg from 2021 to 2025, and as the acting administrator of the Federal Aviation Administration from June 2023 to October 2023. She previously served as commissioner of the New York City Department of Transportation from 2014 to 2020.