Mladost (meaning "youth" in Slavic languages) may refer to:
- Placenames
- Mladost, Sofia, municipality of Sofia, Bulgaria
- Mladost, Varna, municipality of Varna, Bulgaria
- Association football clubs
- NK Mladost 127, former name of the Croatian club HNK Suhopolje
- FK Mladost Apatin, Serbian club based in Apatin
- FK Mladost Bački Jarak, Serbian club based in Bački Jarak
- FK Mladost Begaljica, Serbian club based in Begaljica
- FK Mladost Bosilegrad, Serbian club based in Bosilegrad
- NK Mladost Cernik, Croatian club based in Cernik
- FK Mladost Gacko, Bosnian club based in Gacko
- FK Mladost Lončari, Bosnian club based in Lončari
- FK Mladost Lučani, Serbian club based in Lučani
- FK Mladost Medoševac, Serbian club based in Medoševac
- FK Mladost Novi Sad, Serbian club based in Novi Sad
- FK Mladost Omoljica, Serbian club based in Omoljica
- FK Mladost Podgorica, Montenegrin club based in Podgorica
- NK Mladost Proložac, Croatian club based in Proložac
- FK Mladost Sandići, Bosnian club based in Sandići
- Other sports clubs
- Mladost (sports society), Croatian sports society based in Zagreb
- HAOK Mladost, volleyball section
- HAVK Mladost, water polo section
- KHL Mladost, Croatian ice hockey club based in Zagreb
- KK Mladost Omoljica, Serbian basketball club based in Omoljica