- O/C
- OBO Vessel
- Obsolete Stock
- Ocean Bill of Lading
- OEM
- Offshore Logistics
- Oil Bulk Ore Vessel
- On Board Bill of Lading
- On Deck Bill of Lading
- On-Line Charge
- On-Line Rate
- Oncarriage
- One-Way Pallet
- Onshore Logistics
- Open Account
- Open Insurance Policy
- Open Order
- Open Position
- Open-Sided Container
- Open-Top Container
- Operating Efficiency
- Operator
- Optimal Trim
- Optimization
- Optional Cargo
- Optional Port
- Optional Stowage Bill of Lading
- Order
- Order Bill of Lading
- Order Line
- Original Equipment Manufacturers
- Out of Gauge Cargo
- Outsider
- Outturn Report
- Outward Handling
- Over Pivot Rate
- Over Pivot Weight
- Overage Additional Premium
- Overcarrier
- Overheight Cargo
- Overlength Cargo
- Overpack
- Overtime
- Overwidth Cargo
- Owner
- Owner's Container Code