Deborah Ann Dingell (née Insley; November 23, 1953) is an American politician and member of the Democratic Party who has been the U.S. representative for Michigan's 6th congressional district since 2015 (known as the 12th congressional district until 2023). She is the widow of John Dingell, her predecessor in the seat, who holds the record as the longest-serving member of Congress in U.S. history. She worked as a consultant to the American Automobile Policy Council. She was a superdelegate for the 2012 Democratic National Convention in Charlotte, North Carolina.

Dingell is active in several Michigan and Washington, D.C., charities and serves on a number of charitable boards. She is a founder and past chair of the National Women's Health Resource Center and the Children's Inn at the National Institutes of Health (NIH). She is also a member of the board of directors for Vital Voices Global Partnership. She is a 1975 graduate of the Edmund A. Walsh School of Foreign Service at Georgetown University.

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