Lena Olin

as Hilma af Klint

Tora Hallström

as Young Hilma

Lily Cole

as Mathilda

Tom Wlaschiha

as Rudolf Steiner

Emmi Tjernström

as Hermina

Catherine Chalk

as Anna Cassel

Rebecca Calder

as Cornelia

Maeve Dermody

as Sigrid

Jazzy De Lisser

as Thomasine

Adam Lundgren

as Hilma's brother

Karolis Kasperavičius

as Johan af Klint

Diana Anevičiūtė-Valiušaitienė

as Older Anna

Paulius Markevičius

as Edvard Munch

Jens Hultén

as Hilma's Father

Anna Björk

as Hilma's Mother

Martin Wallström

as Hilma's Nephew

Moa Enqvist Stefansdotter

Lukas Loughran

Liam Lundin

Erik Dahlin

Vaidotas Martinaitis

Vytautas Kaniušonis

Gabija Jaraminaitė Ryškuvienė

Elvinas Juodkazis

Arman Fanni

Aistė Diržiūtė

Clare Holman

Simonas Mozūra

Milda Gecaitė

Niall Balfe

as Older Gustaf