Elle Fanning
as Catherine the Great
Phoebe Fox
as Marial
Gwilym Lee
as Grigor Dymov
Adam Godley
as Archie
Belinda Bromilow
as Elizabeth
Bayo Gbadamosi
as Arkady Vasilovich
Florence Keith-Roach
as Tatyana
Douglas Hodge
as General Velementov
Nicholas Hoult
as Tsar Peter
Charity Wakefield
as Georgina Dymov
Sacha Dhawan
as Orlov
Danusia Samal
as Lady Antonia Svenska
Freddie Fox
as King Hugo
Grace Molony
as Queen Agnes
Sebastian De Souza
as Leo
Jason Isaacs
as Peter the Great
Gillian Anderson
as Joanna Elisabeth of Holstein-Gottorp