| HAWB | | House Airwaybill |
| HBL | | House Bill of Lading |
| H/c | | Held covered |
| HCS | | Harmonised Commodity Section |
| h/h | | Half-height (container) |
| HL | | Heavy lift |
| HMC | | Her Majesty's Customs |
| HMC&E | | Her Majesty's Customs and Excise |
| HMSO | | Her Majestys Stationery Office |
| HVR | | Hague-Visby Rules |
| IATA | | International Air Transport Association |
| IB | | In Bond or invoice book |
| IBAP | | Intervention Board for Agricultural Produce |
| (x) IBOR | | Interbank Offered Rate |
| IBRD | | International Bank for Reconstruction and Development |
| ICAO | | International Civil Aviation Organisation |
| ICB | | International Container Bureau |
| ICC | | International Chamber of Commerce |
| IC & C | | Invoice cost and charges |
| ICCH | | International Commodities Clearing House |
| ICD | | Inland clearance Depot |
| ICHCA | | International Cargo Handling Co-ordination Association |
| ICPO | | Irrecoverable Corporate Purchasing Order |
| ICS | | International Chamber of Shipping or Institute of Chartered Shipbrokers |
| ID | | Import Duty |
| IDA | | International Development Authority |
| IDR | | Import Duty Relief |
| IFC | | International Finance Corporation |
| IFF | | Institute of Freight Forwarders |
| I/L | | Import License |
| ILO | | International Labour Organisation |
| ILU | | Institute of London Underwriters |
| IMB | | International Maritime Council |
| IMCO | | International Maritime Consultative Organisation |
| IMDG | | International Maritime Dangerous Goods code |
| IMF | | International Monetary Fund |
| IMO | | International Maritime Organisation |
| IMT | | International Money Transfer |
| INR | | Indian Rupee |
| INSA | | International Shipowners' Association |
| INTRASTAT | | Intra EC Statistics |
| IOE | | Institute of Export |
| ipa | | Including particular average |
| IPR | | Inward Processing Relief |
| IRC | | International Reply Coupon |
| IRD | | Inland rail depot |
| IRN | | Import Release Note |
| IRU | | Union Internationale des Transports Routiers |
| ISC | | Institute Strike Clauses |
| ISF | | International Shipping Federation |
| ISO | | International Standards Organization |
| ITI | | Customs Convention on the International transit of goods |
| ITMA | | Institute of Trade Mark Agents |
| IUPIP | | International Union for the Protection of Intellectual Property |
| IWC | | Institute War Clauses |
| J & WO | | Jettison & washing overboard |
| JLCD | | Joint Liason Committee on Documents |
| JPY | | Japenese Yen |
| LAFTA | | Latin American Free Trade Association |
| LASH | | Lighter aboard ship |
| L/C | | Letter of Credit |
| LCL | | Less than full Container Load |
| LAB | | Lloyds Average Bond |
| L/A | | Lloyds Agent, letter of authority |
| ldg | | Loading |
| Ldg & Dly | | Landing and delivery |
| Lds | | Loads |
| LDC | | Less-developed country |
| LEC | | Local export control |
| LI | | Letter of Indemnity |
| LIBID | | London Interbank Bid Rate |
| LIBOR | | London Interbank Offered Rate |
| LIC | | Local import control |
| LIFFE | | London International Financial Futures Exchange |
| LIMEAN | | London Interbank Mean Rate |
| Lkg & bkg | | Leakage & breakage |
| Lkge | | Leakage |
| L/L | | Long length |
| LO/LO | | Lift on/lift off |
| LOR | | Lender's Offered Rate |
| LR | | Lloyds Register |
| ls | | Lumpsum (freight) |
| LT-EUR1 | | Long-term movement certificate (EC) |
| LVI | | Local Veterinary Inspector |
| LVP | | Low Value Procedure |
| MAT | | Master Air Waybill |
| MAWB | | Mersey Docks and Harbour Board |
| MFN | | Most Favoured Nation |
| mgr | | Merry-go-round (rail); manager |
| Min | | Minimum |
| Min wt | | Minimum weight |
| MIP | | Marine Insurance Policy |
| MR | | Mate's receipt |
| mst or msmt | | Measurement |
| MT | | Mail Transfer, metric tonne; empty (to describe container) |
| M3 | | Cubic metre |
| MV or mv | | Motor vessel |
