| Acronym | Definition |
|---|
| RON | Research Octane Number (gasoline) |
| RON | Remain(ing) Overnight |
| RON | Romanian New Leu (Romanian currency) |
| RON | Ready or Not |
| RON | Rise of Nations (game) |
| RON | Record of Needs (special education; UK) |
| RON | Republic of Nauru |
| RON | Remain Over Night (aviation) |
| RON | Research Octane Number |
| RON | Run of Network |
| RON | Rose O'Neill (creator of the Kewpie Doll, early millionaire, and illustrator; circa 1910) |
| RON | Air Nauru (ICAO code) |
| RON | Rete Ondametrica Nazionale (Italian: Ondametrica National Network; climate) |
| RON | Total on Resistance (electronics) |
| RON | Reform Ohio Now (election reform group) |
| RON | Ridder in de Orde van Oranje Nassau (Dutch: Knight in the Order of Oranje Nassau) |
| RON | Re-Open Nominations (voting systems) |
| RON | Return on Net Worth (finance) |
| RON | Resilient Overlay Network |
| RON | Reality or Nothing (Dennis Potter's Cold Lazarus) |
| RON | Routing Organization Number |
| RON | Report of Nonconformance |
| RON | Remote Online Network |
| RON | Russian Overlay Network |