YA, yA, or Ya may refer to:
Yahoo! is an American web services provider headquartered in Sunnyvale, California, and owned by Verizon Media.
The Yazidis (also written as Yezidis) ( (listen) yə-ZEE-deez, Kurmanji: Êzîdî, IPA: [eːzɪˈdiː]) or the Yazidi people (also Yezidi nation) (Kurmanji: Miletê Êzîdî) are a mostly Kurmanji (or Ezdiki) speaking minority ethnoreligious group, indigenous to a region of northern Mesopotamia (northern Iraq, northern Syria and southeastern Turkey) who are strictly endogamous.
The Yangtze or Yangzi (English: or ), which is 6,300 km (3,915 mi) long, is the longest river in Asia, the third-longest in the world and the longest in the world to flow entirely within one country.
Yakuza (Japanese: ヤクザ, IPA: [jaꜜkɯza]), also known as gokudō (極道, "the extreme path", IPA: [gokɯꜜdoː]) are members of transnational organized crime syndicates originating in Japan.
Yakuza, known in Japan as Ryū ga Gotoku (龍が如く, Like a Dragon, Japanese: [ɾʲɨᵝː ɡa̠ go̞to̞kɯ̟ᵝ]), is an action-adventure beat 'em up video game franchise created, owned and published by Sega.