Widerberg is a surname. Notable people with the surname include:
Bo Widerberg (1930–1997), Swedish film director, writer, and actor
Frans Widerberg (1934–2017), Norwegian painter and graphic artist
Henriette Widerberg (1796–1872), Swedish opera singer
Johan Widerberg (born 1974), Swedish actor
Siv Widerberg (1931–2020), Swedish writer and journalist
