RTZ

RTZ may refer to:


 * RTZ (radio station), a radio time signal station in Irkutsk, Russia
 * RTZ (band), an American rock band
 * Return-to-zero, a signaling protocol that returns to its "zero" state between tokens
 * Return to Zork, a 1993 adventure game in the Zork series
 * Rio Tinto (corporation) (previously the Rio Tinto – Zinc Corporation), a British-Australian multinational metals and mining corporation
 * RTZ, a 2009 compilation album by Six Organs of Admittance