Barleycorn

Barleycorn may refer to:


 * A grain of barley
 * Barleycorn (unit) a unit of length, equal to one-third of an inch
 * Barleycorn (surname)
 * The Barleycorn, an Irish traditional music band
 * "John Barleycorn", a traditional British folk-song
 * John Barleycorn (novel), by Jack London