0W

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


 * 0W, zero west, or 0°W, coordinate of the prime meridian
 * 0W or ZW, or zero width, a non-printing character used in computer typesetting of some complex scripts
 * Zero-width joiner
 * Zero-width non-joiner
 * Zero-width space
 * Zero-width non-breaking space
 * Zero waste, an environmental concept