Orson Welles

Justinian

Laurence Harvey

Cethegus

Sylva Koscina

Theodora

Harriet Andersson

Mathawsintha

Michael Dunn

Narses

Ingrid Boulting

Julia (as Ingrid Brett)

Dieter Eppler

Thorsmund

Lang Jeffries

Belisar

Robert Hoffmann

Totila