Petr Zelenka (born 21 August 1967 in Prague, Czechoslovakia) is a Czech playwright and director of theatre and film.
An early notable work is a black comedy, Tales of Common Insanity (2004) (Czech: Příběhy obyčejného šílenství), which he directed at Dejvické divadlo.
The play was later staged in other Czech theatres as well as in Poland, Hungary, Slovakia, Slovenia and Germany.
His second most notable play is Teremin, inspired by the life of Russian inventor Léon Theremin.
His 2010 election advertisement "Přemluv bábu a dědu" caused controversy as critics believed it was offensive against elder people[1] and "an imperfect copy of Sarah Silverman's stand-up video.