Y.T. (short for Yours Truly), a major character in Snow Crash by Neal Stephenson

YouTube (pronounced /juːtuːb/ or /juːtjuːb/[1]) is a video sharing website where users can upload, view and share video clips. YouTube was created in mid-February 2005 by three former PayPal employees.[2] The San Bruno-based service uses Adobe Flash...

Yoot Tower

Years of the Trees, an ancient era in Tolkien's legendarium

yellowTAB was a German software firm that produced an operating system called ZETA based on BeOS 5.1.0. They never publicly confirmed that they have the BeOS source code or what their licensing agreement with BeOS's owners PalmSource is, but it is...

Air Togo (IATA airline designator)

Mayotte (ISO 3166-1 alpha-2 code) (its gTLD it .yt)

Yukon Territory (Canadian Province/Territory Code)

an abbreviation for the phrase "[are] you there?", commonly used in AIM or other messenger systems