Ylva Bjørkaas Thedin (born 6 August 2002 in Oslo) is a Norwegian actress.

She made her film debut in 2018, playing the lead role of Jill in the drama film Phoenix (Føniks). On television, she gained recognition for portraying Ingrid, Lars Haaland's daughter, in the sci-fi series Beforeigners (2019–2021). She achieved international prominence with the role of Isolde Eidsvoll in the Netflix series Ragnarok (2020–2023). She has also appeared in the film Nothing to Laugh About (Ingenting å le av, 2021) and on television in the series Basic Bitch (2026).