Vice Adm. Nancy A. Hann, NOAA, is the National Oceanic and Atmospheric Administration's Deputy Under Secretary for Operations (DUSO). She took over that position in 2024 after serving as the director of the NOAA Commissioned Corps following a 22-year career as a NOAA commissioned officer.

She is a graduate of the University of San Diego, where she earned her bachelor’s degree in marine science. She holds a master’s degree in aeronautical science from Embry Riddle Aeronautical University and a master’s degree in public administration from the Kennedy School of Government at Harvard University.

She has extensive experience in Congressional relations, human capital management, strategic planning, human resources management, and service level budget and acquisition management.