I Killed Einstein, Gentlemen (Czech: Zabil jsem Einsteina, pánové) is a 1970 Czechoslovak science fiction comedy film directed by Oldřich Lipský. The film starred Jiří Sovák, Jana Brejchová, Lubomír Lipský, Iva Janžurová, Petr Čepek, and other actors. The major plot revolves around timetravel to the past to change the future.

The film was shot in late summer 1968 and premiered in Czechoslovakia on 27 February 1970.In the film, a character uses a device which has been likened to a selfie stick, several decades before its modern design was developed.