Zd or ZD may refer to:
- Nissan ZD engine, an automobile engine
- Zero Defects, a management program to eliminate defects in industrial production, popular in American industry in the late 1960s
- Zero-defects mentality, in which a command-and-control structure does not tolerate mistakes
- Zertifikat Deutsch, a certificate of German language ability
- Ziff Davis, a magazine publisher and Internet information provider
- Zooey Deschanel, an American actress and musician
This disambiguation page lists articles associated with the title ZD.If an internal link led you here, you may wish to change the link to point directly to the intended article. Category: