The No Zone is a location that appears in the Sonic the Hedgehog comic series and its spin-offs published by Archie Comics. It is a Zone that exists at a 90° angle to other dimensions, including Mobius Prime. Because of this, individuals from the No Zone tend to appear sideways in other zones, effectively standing on the walls instead of the floor, and visitors to the zone tend to appear sideways in the zone (whereas they would have been upright in their own). For this reason it is sometimes referred to as the Perpendicular Zone.
The No Zone's inhabitants are affiliated with a trans-dimensional police force called the Zone Cops, of which Zonic is a star member. As a result all of the inhabitants seem to have law-abiding personalities that are nonetheless based on their Mobius Prime personalities - including such counterparts as the director of the prison, Warden Zobotnik, and prison therapist Zouge the Bat.
From the No Zone, the Zone Cops keep watch over the Cosmic Interstate and all the alternate versions of Mobius that exist. Zonic's headquarters in the No Zone is a technologically advanced nerve center equipped with hundreds of computer screens. Each of these screens monitors a different dimension, as well as the Cosmic Interstate itself. (SSS: #10)
The No Zone has been left in ruins during the recent war between the Zone Cops and Dr. Eggman Nega. (StH: #197) The Zone Jail in the No Zone was damaged further due to Scourge the Hedgehog and the Destructix, led by Fiona Fox. (SU: #29-#32)