ZIP
ZIP is best known as the United States postal zone improvement plan, but also appears in electronics as a zigzag inline package, in networking as a zone information protocol, and in various tech jargon.
Miscellaneous
Zero Intelligence Plus
Zinc, Iron, And Protein
Zinns Infernal Pile
Zesty Iron Potatoes
Zoning Improvement Plan
Governmental
Zone Improvement Plan
Zone Indication Protocol
Zope Internationalization Project
Zone Improvement Project