YU or Yu may refer to:
Yugoslavia (; Serbo-Croatian: Jugoslavija/Југославија [juɡǒslaːʋija]; Slovene: Jugoslavija [juɡɔˈslàːʋija]; Macedonian: Југославија [juɡɔˈsɫavija]; Pannonian Rusyn: Югославия, transcr.
The Yugoslav Wars were a series of separate but related ethnic conflicts, wars of independence and insurgencies fought in the former Yugoslavia from 1991 to 2001, which led to the breakup of the Yugoslav state.
Yunnan (云南) is a province in Southwest China. The province spans approximately 394,000 square kilometres (152,000 sq mi) and has a population of 47.368 million (as of 2015).
Yulia Volodymyrivna Tymoshenko (Ukrainian: Ю́лія Володи́мирівна Тимоше́нко, IPA: [ˈjul⁽ʲ⁾ijɐ woloˈdɪmɪr⁽ʲ⁾iu̯nɐ tɪmoˈʃɛnko]; née Hrihyan (Грігян); born 27 November 1960) is a Ukrainian politician.