| 缩写 | 英文 | 中文 |
| M. | MEASUREMENT | 按货物的体积计算运价 |
| MAX | MAXIMUM,THE MOST | 最大(多) |
| MDM | MADAME | 夫人,女士 |
| MIN | MINIMUM,THE LEAST | 最小(少) |
| MME | MADAME | 夫人,女士 |
| MOLOO | MORE OR LESS AT OWNER'S OPTION | 溢短装由船东选择 |
| MOLSO | MORE OR LESS AT SELLER'S OPTION | 溢短装由卖方选择 |
| MR. | MISTER | 先生 |
| M/R,M.R. | MATE'S RECEIPT | 大副收据 |
| MRS | MISTRESS | 夫人 |
| M.S. | MOTOR SHIP | 内燃机船 |
| MS | MISS,MISTRESS | 小姐,夫人,女士 |
| M/T,MT | METRIC TON OR MOTOR TANKER | 公吨 或 内燃机油轮 |
| MTON | MEASUREMENT TON | 尺码吨 |
| MV | MOTOR VESSEL | 内燃机船 |
| M | minimum(rate classification) | 最低(运费) |
| m | metre(s) | 米 |
| m3 | cubic metre(s) | 立方米 |
| MACH | modular automated container handling | |
| MFN | Most Favoured Nation | 最惠国 |
| M.H. | Merchants Haulage | 商船运输 |
| M/R | mate's receipt | 大付收据 |
| M+R | maintenance and repair(centre) | 维护修理 |
| MAWB | Master Air Waybill | 总运单(空) |
| Mdse | merchandise | 商品 |
| msbl | missing bill of lading | 丢失提单 |
| msca | missing cargo | 灭失货物 |
| MT | motor tanker | 内燃机油轮 |
| MTD | multimodal transport document | 多式联运单证 |
| MTO | multimodal transport operator | 多式联运经营人 |
| M/S | Motor ship | 内燃机船 |
| M/V | Motor Vessel | 内燃机船 |


