Zd or ZD may refer to:
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Nissan ZD engine, an automobile engine
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Zero Defects, a management program to eliminate defects in industrial production, popular in American industry in the late 1960s
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Zero-defects mentality
A zero-defects mentality (also known as Zero Error Syndrome) exists when a command-and-control structure does not tolerate mistakes. This atmosphere is now widely acknowledged to be ineffective in both military and corporate life.
The results of ...
, in which a command-and-control structure does not tolerate mistakes
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Zertifikat Deutsch The Zertifikat Deutsch (ZD) is an internationally recognized exam of German language ability. It tests for a level of ability equivalent to level B1 in the Common European Framework of Reference for Languages (CEFR) scale. Candidates typically need ...
, a certificate of German language ability
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Ziff Davis, a magazine publisher and Internet information provider
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Zooey Deschanel, an American actress and musician
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