Lydia Frances Polgreen (born 1975) is an American journalist. She is best known for having been the editor-in-chief of HuffPost. She also spent about one year between 2021 and 2022 as the head of content for Gimlet Media. Prior to that she was editorial director of NYT Global at The New York Times, and the West Africa bureau chief for the same publication, based in Dakar, Senegal, from 2005 to 2009. She won many awards, most recently the Livingston award in 2009. She also reported from India. She was then based in Johannesburg, South Africa where she was The New York Times Johannesburg Bureau Chief.