In law, a youth is a person who is neither an adult nor a child, but somewhere in between, commonly called a teenager.

The age in which a person is considered a "youth," and thus eligible for special treatment under the law varies around the world. Commonly, a youth is defined as being somewhere between age 12 and age 25, with different countries and administrative regions choosing more narrow definitions within that frame.

Youth (born Martin Glover) is also an influential record producer and a founding member of the UK band Killing Joke.