DBZ may refer to: dBZ (meteorology), decibels of Z, a meteorological measure of equivalent reflectivity (Z) of a radar signal dB(Z), zero-weighted decibel Dean Zelinsky (born 1957), American guitar designer and founder of DBZ Guitars Dragon Ball Z, the anime adaptation of the second portion of the Dragon Ball manga Dolderbahn, a rack railway in the city of Zürich, Switzerland Division by zero, a term used in mathematics if the divisor (denominator) is zero