Beforeigners is a Norwegian television series that premiered on 21 August 2019. The show was created and written by Eilif Skodvin and Anne Bjørnstad, and directed by Jens Lien. Produced by Rubicon TV AS for HBO Nordic, it is the first Norwegian-language series produced by the Nordic region channel of American network HBO.

The series concerns the titular "beforeigners", people from different time periods who suddenly appear in the present, and their integration into 21st-century Norway. The protagonists are Lars (Nicolai Cleve Broch), an Oslo police detective, and Alfhildr (Krista Kosonen), a Viking-era recruit, who investigate the murder of a Stone Ager. In September 2020, HBO confirmed that the series had been renewed for a second season. Season two premiered on HBO Max in Europe on 5 December 2021, and in the United States on 23 December 2021. In the second season, Alfhildr and Lars investigate Oslo murders with ties to Jack the Ripper.