| Acronym | Meaning |
 | IC | Ice Crystals (METAR Code) - Iceland (FIPS 10-4 Country Code) -Integrated Circuit |
| BFF | Best Friends Forever |
| MIP | Multilateral Interoperability Programme - Multiple Identity Poster |
| ISCII | Indian Standard Code For Information Interchange |
| IRA | Individual Retirement Account (legally |
| IS | Icelandic Language (ISO 639-1 Code) |
| BWA | Botswana (ISO 3166 Trigram) |
| NPC | National Postgraduate Committee - National Provincial Championship (New Zealand Rugby Competition) - Navigation Planning Chart - Non-Player Character (role-playing Games) |
| SIN | Sinhalese Language (ISO 639-2 Code) |
| NV | Navajo Language (ISO 639-1 Code) |
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