Linnea Berthelsen is a British-trained, Danish actress.

Berthelsen was raised in Denmark and moved to London in her early twenties, where she now resides.

She is known for Netflix' Stranger Things (2016-2025) and FX's "DEVS" from Alex Garland (2020)

She trained at East 15 Acting School in London, (some notable alumni include English Director Stephen Daldry and English Dramatist April De Angelis).

Her independent studies include training with movement director Kate Sagosky (RSC, LAMDA), voice coach Jamie Matthewman (Guildhall School of Music and Drama) and US based training include Fay Simpson's Lucid Body and Creative Dream Work coaching with Amanda Lovestreet Joy.

She is represented by Sophie Patterson at Curtis Brown Group in London