UII may refer to:
* ''
Unione Induista Italia'', a Hindu association in Italy
*
Islamic University of Indonesia (''Universitas Islam Indonesia'')
*
Unique Ingredient Identifier
* Unique Item Identifier, see
Item Unique Identification
Unique Identification Marking, UID marking, Item Unique Identification or IUID, is a part of the compliance process mandated by the United States Department of Defense. It is a permanent marking method used to give equipment a unique ID. Marking is ...
*
Útila Airport, serving Útila, Bay Islands, Honduras
{{disambiguation