YA, yA, or Ya may refer to:
Yahoo! is a web services provider headquartered in Sunnyvale, California and owned by Verizon Communications through Oath Inc..
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.
The Yazidis, or Yezidis ( ( listen) yə-ZEE-deez) (Kurmanji Kurdish: Êzidî, IPA: [eːzɪˈdiː]), are a Kurdish-speaking people, indigenous to a region of northern Mesopotamia (known natively as Ezidkhan) who are strictly endogamous.
Yahoo! Mail is an e-mail service launched in 1997 through the American parent company Yahoo. Yahoo Mail provides four different email plans: three for personal use (Basic, Plus, and Ad Free) and another for businesses.
The Yangtze (English: or ), which is 6,380 km (3,964 mi) long, is the longest river in Asia and the third-longest in the world.
Yakuza (Japanese: ヤクザ, [jaꜜkɯza]), also known as gokudō (極道, "the extreme path", [gokɯdoː]), are members of transnational organized crime syndicates originating in Japan.