| Akronim | Penjelasan |
| I |
| I | [kimia] Iodine (Iodin). |
| I/O | Input or Output. |
| IA | Investment Allowance. |
| IAA | Industrial Adjustment Allowance. |
| IADPs | Integrated Agricultural Development Projects (Projek Pembangunan Pertanian Bersepadu). |
| IB | Indonesia Belanda. |
| i.b. | istilah ilmu bahasa (linguistic term). |
| IBA | Industrial Building Allowance. |
| IBFIM | Islamic Banking and Finance Institute of Malaysia (Institut Perbankan dan Kewangan Islam Malaysia). |
| IBG | Inter Bank Giro. |
| Ibr. | [kitab injil] Ibrani (Hebrews). |
| IBRD | International Bank for Reconstruction and Development (Bank Antarabangsa bagi Pemulihan dan Pembangunan). |
| IBS | Industrialised Building System (Sistem Binaan Berindustri). |
| IC | Identity Card, Integrated Circuit. |
| ICA | Industrial Coordination Act 1975AD (Akta Penyelarasan Perindustrian 1975AD). |
| ICBM | Inter-Continental Ballistic Missile. |
| ICFM | Islamic Conference of Foreign Ministers. |
| ICI | Imperial Chemical Industries (paint company). |
| ICM | Inisiatif Chiang Mai (Chiang Mai Initiative). |
| ICOR | Incremental Capital Output Ratio. |
| ICP | Industry Chain Programme (Program Rantaian Industri). |
| ICT | Information and Communications Technology (Teknologi Maklumat dan Komunikasi). |
| ICU | Intensive Care Unit. |
| ID | Identification. |
| Id. | Indonesia. |
| IDB | Islamic Development Bank. |
| IDFR | Institute of Diplomacy and Foreign Relations. |
| IE | Internet Explorer. |
| i.e. | istilah ekonomi (economic term). |
| IFSB | Islamic Financial Services Board. |
| IGAs | Investment Guarantee Agreements (Perjanjian Jaminan Pelaburan). |
| IGS | Industry Research and Development Grant Scheme (Skim Geran Penyelidikan dan Pembangunan Industri). |
| IHP | Indeks Harga Pengguna. |
| IHPG | Indeks Harga PenGeluar. |
| IIM | Institut Integriti Malaysia (Malaysian Integrity Institute). |
| IINA | International Islamic News Agency (Kantor Berita Islam Antarabangsa). |
| IKKL | Indeks Komposit Kuala Lumpur (Kuala Lumpur Composite Index). |
| IKP | Indeks Keyakinan Pekerjaan (Employment Confidence Index), Institusi Kewangan Pembangunan. |
| IKPH | Institusi Kewangan Pelbagai Hala (Multilateral Financial Institutions). |
| IKS | Industri Kecil dan Sederhana. |
| Im. | [kitab injil] Imamat (Leviticus). |
| IMD | Institute for Management Development. |
| IMF | International Monetary Fund (Tabung Kewangan Antarabangsa). |
| IMP2 | Second Industrial Master Plan. |
| IMR | Institute of Medical Research. |
| IMS-GT | Indonesia-Malaysia-Singapore Growth Triangle. |
| IMT-GT | Indonesia-Malaysia-Thailand Growth Triangle. |
| In | [kimia] Indium (Indium). |
| in. | inci. |
| INFRA | INstitute For Rural Advancement. |
| INSEP | Industrial Skills Enhancement Programme. |
| INSPEN | INStitut PEnilaian Negara (National Institute of Valuation). |
| INTAN | INstitut Tadbiran Awam Negara (National Institute of Public Administration). |
| IOFC | International Offshore Financial Centre (Pusat Kewangan Luar Pesisir Antarabangsa). |
| IOU | I Owe You. |
| IP | Imbangan Pembayaran (Balance of Payments), Internet Protocol. |
| IPA | Investment Promotion Agency (Agensi Promosi Pelaburan). |
| IPBA | Inisiatif Pasaran Bon Asia (Asian Bond Markets Initiative). |
| IPCs | Infrastructure Project Companies, International Procurement Centres. |
| IPEBP | Indeks Pembangunan Ekonomi Berasaskan Pengetahuan (Knowledge-Based Economy Development Index). |
| IPI | Industrial Production Index. |
| IPKIM | Institut Perbankan dan Kewangan Islam Malaysia (Islamic Banking and Finance Institute of Malaysia). |
| IPKPM | Institut Penyelidikan dan Kemajuan Pertanian Malaysia (Malaysian Agricultural Research and Development Institute). |
| IPO | Initial Public Offering (Tawaran Awam Permulaan). |
| IPP | Independent Power Producer. |
| IPPM | Institut Penyelidikan Perhutanan Malaysia (Forest Research Institute of Malaysia). |
| IPPPM | Institut Penyelidikan dan Pembangunan Pertanian Malaysia (Malaysian Agricultural Research and Development Institute). |
| i.pt. | istilah pertanian (agricultural term). |
| IPTAR | Institut Penyiaran Tun Abdul Razak (Tun Abdul Razak Broadcasting Institute). |
| IPTNM | Institut Penyelidikan Teknologi Nuklear Malaysia (Malaysian Institute of Nuclear Technology Research). |
| IQR | Inter-Quartile Range (Jarak di Antara Kuartil). |
| Ir | [kimia] Iridium (Iridium). |
| IRA | Irish Republican Army. |
| IRPA | Intensification of Research in Priority Areas (Penumpuan Penyelidikan dalam Bidang-bidang Keutamaan). |
| IRS | Internal Revenue Service. |
| i.s. | istilah sains (scientific term). |
| ISA | Internal Security Act (Akta Keselamatan Negara). |
| Isa. | [kitab injil] Isaiah (Yesaya). |
| ISDN | Integrated Services Digital Network. |
| ISMM | Institut Sistem Mikroelektronik Malaysia (Malaysian Institute of Microelectronic Systems). |
| ISO | International Organization for Standardization (Pertubuhan Standard Antarabangsa). |
| ISP | Internet Service Provider. |
| ist. | istilah am (general term). |
| IT | Information Technology (Teknologi Maklumat). |
| i.t. | istilah teknik (technical term). |
| ITA | Investment Tax Allowance. |
| ITAF | Industrial Technical Adjustment/Assistance Fund (Tabung Bantuan Teknikal Perindustrian). |
| ITEX | International Inventions, Innovation, Industrial Design, and Technology Exhibition (Pameran Ciptaan, Inovasi, Rekaan Industri dan Teknologi Antarabangsa). |
| ITK | Institut Teknologi Kebangsaan. |
| ITM | Institut Teknologi MARA. |
| ITO | International Trade Organization (Pertubuhan Perdagangan Antarabangsa). |
| ITRCo | International Tripartite Rubber Corporation. |
| ITTA | International Tropical Timber Agreement (Perjanjian Kayu Balak Tropika Antarabangsa). |
| ITU | International Telecommunications Union (Kesatuan Talikom Antarabangsa). |
