What does FIU stand for?

Facilities Interface Unit (SAUS)

Facility Interface Unit - Telecommunications

Federal Information Users (SAUS)

Federation of Information Users - Defunct (EA)

Fiberglass Industries Unlimited, Alton Bay, NH - Manufacturer code for watercraft hull identification number (USCG)

Field Insertion Unit - Rational, California (NITA)

Field Intelligence Unit (MUGU)

Fighter Interception Unit - RAF - British

Fingerprint Identification Unit - Sony Corp.

Fire Investigation Unit (WDAA)

Flight Interim Unit (ACAE)

Florida International University - Miami

Forward Interpretation Unit - Military

Frequency Identification Unit (IAA)

Finno-Ugrian - MARC language code - Library of Congress (LCCP)