| Abbreviation | Definition |
|---|---|
| OFPA | Ontario Food Protection Association |
| OFTB | Ontario Food Terminal Board |
| OG | Ole Grey |
| OG | Orange Gatorade |
| OG | Organically Grown |
| OIV | Organizzazione Internazionale della Vigna e del Vino (International Organisation of Vine and Wine ) |
| OJ | Opaquely Juicy |
| OJ | Orange Juice |
| OJB | Orange Juice Blue |
| OJC | Orange Juice Concentrate |
| OJC | Orange Juice Crud |
| OJP | Orange Juice Pulp |
| OK | Orrin Kendall |
| OLE | Olive Leaf Extract |
| OM | Oil Mineral |
| OM | Orange Moss |
| OMD | One More Drink |
| OMR | One More Round |
| ON | Order Now |
| ONF | Ozark Natural Foods |