Closely Watched Trains is a 1966 Czechoslovakian New Wave coming-of-age comedy film directed by Jiří Menzel and is one of the best-known films of the Czechoslovak New Wave. It was released in the United Kingdom as Closely Observed Trains. It is a story about a young man working at a train station in German-occupied Czechoslovakia during World War II. The film is based on a 1965 novel by Bohumil Hrabal. It was produced by Barrandov Studios and filmed on location in Central Bohemia. Released outside Czechoslovakia during 1967, it received widespread acclaim and won the Best Foreign Language Oscar at the 40th Academy Awards in 1968. Nowadays the movie is assessed as one of the finest works of the Czech New Cinema.

The Czechoslovak New Wave is a term used for the Czechoslovak filmmakers who started making films in the 1960s. The directors commonly included are Miloš Forman, Věra Chytilová, Ivan Passer, Pavel Juráček, Jiří Menzel, Jan Němec, Jaromil Jireš, Evald Schorm, Hynek Bočan, Juraj Herz, Juraj Jakubisko, Štefan Uher and others. The movement was sometimes called the "Czechoslovak film miracle".