Nancy Hann

Nancy Hann
Official portrait, 2024
Born1973 (age 52–53)
AllegianceUnited States
BranchNOAA Commissioned Officer Corps
Service years1999–2026
RankVice Admiral
Commands
  • Acting Under Secretary of Commerce for Oceans and Atmosphere
  • Acting Administrator, NOAA
  • Deputy Under Secretary for Operations, NOAA
  • Director, NOAA Commissioned Officer Corps
  • Director, NOAA Office of Marine and Aviation Operations
AwardsDepartment of Commerce Silver Medal with O device
Department of Commerce Bronze Medal
Alma materUniversity of San Diego (BA)
Embry-Riddle Aeronautical University (MS)
George Washington University (GrDip)
Harvard University (MPA)

Nancy A. Hann (born 1973) is a retired NOAA Commissioned Officer Corps vice admiral. Hann last served as the deputy under secretary for operations at the National Oceanic and Atmospheric Administration from June 2024 to December 2025. She also held the role of acting NOAA Administrator from January 20 to March 31, 2025. Prior to that, she served as the director of the NOAA Corps and director of the NOAA Office of Marine and Aviation Operations (OMAO) from November 2021 to July 2024, and was the NOAA Corps and OMAO's deputy director from April 2018 to November 2021. Hann is the first woman to achieve the rank of vice admiral in the history of the NOAA Corps and its predecessors.