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