Letter Never Sent (Russian: Неотправленное письмо, translit. Neotpravlennoye pismo, sometimes translated as The Unsent Letter or The Unmailed Letter) is a 1960 Soviet adventure drama film directed by Mikhail Kalatozov and starring Tatiana Samoilova. It was entered into the 1960 Cannes Film Festival, but was withdrawn just before the screening on 17 May; according to the Soviet representatives, the film was "unfinished" (as a matter of fact, Kalatozov wanted to re-shoot some sequences before the premiere in USSR).

The film was shot in black-and-white with a 4:3 aspect ratio and monaural sound. It was Kalatozov's follow-up to perhaps his most lauded film, The Cranes Are Flying, which also starred Samoilova.