Jolly Fellows (Russian: Весёлые ребята, romanized: Vesjolyje rebjata), also translated as Happy-Go-Lucky Guys, Moscow Laughs and Jazz Comedy, is a 1934 Soviet musical film, directed by Grigori Aleksandrov and starring his wife Lyubov Orlova, a gifted singer and the first recognized star of Soviet cinema.The script was written by Aleksandrov, Vladimir Mass, and Nikolai Erdman (whose father briefly appears on screen as a German music teacher). It features several songs which instantly became classics across the Soviet Union. The most famous song — "Kak mnogo devushek khoroshikh" (Such a lot of nice girls) — enjoyed international fame, covered as "Serdtse" (Heart) by Pyotr Leshchenko. Music was by Isaak Dunayevsky, the lyrics were written by the Soviet poet Vasily Lebedev-Kumach.

Both Orlova and her co-star, the jazz singer and comic actor Leonid Utyosov, were propelled to stardom after this movie.