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.
Yuri Alekseyevich Gagarin (Russian: Ю́рий Алексе́евич Гага́рин, IPA: [ˈjʉrʲɪj ɐlʲɪˈksʲejɪvʲɪtɕ ɡɐˈɡarʲɪn]; 9 March 1934 – 27 March 1968) was a Soviet pilot and cosmonaut.
Yunnan (云南) is a province of the People's Republic of China. Located in Southwest China, the province spans approximately 394,000 square kilometres (152,000 sq mi) and has a population of 45.7 million (as of 2009).
Yulia Volodymyrivna Tymoshenko (Ukrainian: Ю́лія Володи́мирівна Тимоше́нко, pronounced [ˈjulʲijɐ woɫoˈdɪmɪrʲiu̯nɐ tɪmoˈʃɛnko]; born Yulia Hrihyan (Грігян), 27 November 1960) is a Ukrainian politician.