YT, Yt or yt may refer to:
Media YouTube, an American online video platform often shortened to "YT"
People YT (rapper) (born 2001), English UK underground rapper Y.T., a character in the novel Snow Crash by Neal Stephenson Winnie Yu Tsang (born 1954), Hong Kong radio personality Jia Yueting (English nickname "YT", born 1973), Chinese entrepreneur (born 1989), Hong Kong singer
Places YT, the ISO 3166-1 alpha-2 code for Mayotte .yt, the Internet top-level domain for Mayotte Yukon (formerly Yukon Territory) in Canada
Science and technology Yt antigen system, a human blood group system Yottatesla, an SI unit of magnetic flux density Yttrium, a chemical element with the former symbol Yt
Transportation Air Togo, IATA airline designator YT Yard tug (YT), one of the US Navy hull classification symbols
See also Y&T, an American hard rock/heavy metal band Whitey (slang) YT Industries, a German mountain bike manufacturer