'''Ahlberg''' or '''Åhlberg''' is a surname. Notable people with the surname include:
*Alf Ahlberg (1892–1979), Swedish writer, humanist and philosopher *Allan Ahlberg (1938–2025), British children's book writer, working together with his wife Janet *Bruno Ahlberg (1911–1966), Finnish boxer *Flemming Ahlberg (born 1946), Danish footballer *Gillis Ahlberg (1892–1930), Swedish rower *Hakon Ahlberg (1891–1984), Swedish architect, editor and author *Janet Ahlberg (1944–1994), British children's book illustrator, working together with her husband Allan * Jessica Ahlberg (born 1979 or 1980), British children's book illustrator and writer, sometimes in collaboration with her father *Mac Ahlberg (1931–2012), Swedish film director and cinematographer *Mats Åhlberg (born 1947), Swedish ice hockey player *Per E. Ahlberg, Swedish vertebrate palaentologist
{{surname|Ahlberg}}