Zone 3

Zone 3 may refer to:


 * Travelcard Zone 3, of the Transport for London zonal system
 * Hardiness zone 3, a geographically defined zone in which a specific category of plant life is capable of growing
 * Zone 3 (laser tag), along with Darkzone, Megazone, and Ultrazone, a laser tag system manufactured by P&C Micros of Melbourne, Australia
 * Zone 3, a literary journal published at Austin Peay State University
 * Southeastern Atlanta
 * Zone 3 of Milan