TY or Ty may refer to:
Tyrannosaurus (/tᵻˌrænəˈsɔːrəs, taɪ-/, meaning "tyrant lizard", from the Ancient Greek tyrannos (τύραννος), "tyrant", and sauros (σαῦρος), "lizard") is a genus of coelurosaurian theropod dinosaur.
Tyrese Darnell Gibson (born December 30, 1978), also known mononymously as Tyrese, is an American Grammy-nominated singer, songwriter, actor, author, television producer, former fashion model and MTV VJ.
A typewriter is a mechanical or electromechanical machine for writing characters similar to those produced by printer's movable type.
Tyler Perry (born Emmitt Perry Jr.; September 13, 1969) is an American actor, comedian, filmmaker, writer, and songwriter, specializing in the gospel genre.
In statistical hypothesis testing, a type I error is the incorrect rejection of a true null hypothesis (a "false positive"), while a type II error is incorrectly retaining a false null hypothesis (a "false negative").
Micheal Ray Stevenson (born November 19, 1989), known by his stage name Tyga (a backronym for Thank you God always), is an American rapper.
Typhoid fever, also known simply as typhoid, is a bacterial infection due to Salmonella typhi that causes symptoms which may vary from mild to severe and usually begin six to thirty days after exposure.