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
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