William Raymond Steiger is a Public Policy Fellow at the Wilson Center in Washington, D.C.. He served as Chief of Staff at the United States Agency for international Development from 2017 to 2021. Previously, Steiger was the chief program officer at Pink Ribbon Red Ribbon, an organization affiliated with the George W. Bush Institute, which works to reduce deaths from cervical cancer and breast cancer in low- and middle-income countries. He was the Special Assistant to the Secretary for International Affairs and the Director of the Office of Global Health Affairs at the U.S. Department of Health and Human Services (DHHS) during the George W. Bush administration, with a portfolio that included HIV/AIDS, malaria, avian flu and pandemic-influenza preparedness.

William Albert Steiger was a member of the US House of Representatives from 1967 to his death from a heart attack in Washington, DC, in 1978. He served as a Republican from Wisconsin.