Rein (disambiguation)

Reins are items of horse tack, used to direct a horse or another animal used for riding or driving.

Rein may also refer to:

People

 * Rein (given name), a list of people with the given name or nickname
 * Rein (surname), a list of people

Other uses

 * Iwakura Rein, a character in of Serial Experiments Lain
 * JAC Rein, a compact sport utility vehicle produced by Chinese automaker JAC Motors
 * Rein Abbey, Austria
 * Rein Abbey, Norway
 * Rein orchid or Piperia, a genus of the orchid family Orchidaceae
 * Reins, an archaic term for kidneys
 * Repetitive electrical impulse noise (REIN), some interference found on problematic DSL internet connections