Becoming Astrid (Swedish: Unga Astrid, Danish: Unge Astrid) is a 2018 biographical drama film about the early life of Swedish author Astrid Lindgren. An international co-production between Sweden and Denmark, the film is directed by Pernille Fischer Christensen, from a screenplay co-written by Christensen and Kim Fupz Aakeson, and stars Alba August and Maria Fahl Vikander as young and elder incarnations of Lindgren, alongside Maria Bonnevie, Magnus Krepper, Trine Dyrholm, Henrik Rafaelsen and Björn Gustafsson.

The film premiered at the 68th Berlin International Film Festival on 21 February 2018, and was theatrically released in Sweden on 14 September of the same year, as well as in Denmark on 31 January 2019.