0E

0E (zero E) or 0-E may refer to:


 * 0E, or zero East, longitude for the Prime Meridian
 * 0e, or On30 European notation for 0 scale using 16.5mm track
 * 0 emission, or Zero emission
 * Zero Emissions Research and Initiatives
 * Zero-emissions vehicle
 * 0 energy or Zero energy
 * zero energy building (ZEB), a building's use with zero net energy consumption and zero carbon emissions
 * Zero-energy Universe concept that the Universe's total amount of energy is exactly zero
 * 0 element, or Zero element, one of several generalizations of the number zero to other algebraic structures