Straightener

Straightener may refer to:


 * Straightener (band), Japanese alternative rock band
 * A straightening iron, a kind of hair iron
 * Any substance used in hair straightening
 * A shaft straightener, a device used in making an arrow or spear
 * Flow straightener, a key element of a wind tunnel
 * Straightener (metalworking), a device used in metalworking to straighten material before it is fed to a stamping press
 * "Wheels of Confusion/The Straightener", a song from Black Sabbath Vol. 4