Gerdt is a Russian spelling of the Germanic surname Herdt. It may refer to: Zinovy Efimovich Gerdt, Russian actor Pavel Andreyevich Gerdt or Paul Gerdt (1844–1917), Russian dancer for the Mariinsky Theatre Elizaveta Pavlovna Gerdt (Елизавета Павловна Гердт) (1891–1975), Russian dancer and teacher Petri Erkki Tapio Gerdt (1983–2002), Finnish chemistry student and Myyrmanni bombing culprit Tuomas Gerdt (1922–2020), Finnish soldier, last living Knight of the Mannerheim Cross