FI
| Abbreviation | Meaning | Tamil Meaning | Category |
|---|---|---|---|
| FI | Field Ionization | - | Computer Acronyms(common) |
| FI | Fouling Index | - | Computer Acronyms(common) |
| FI | FlightInstrumentation | - | Organizations |
| FI | Formal Inspection | - | Organizations |
| FI | Finland (ISO 3166 Digram; FIPS 10-4 Country Code) | - | Astronomy |
| FI | Finnish Language (ISO 639-1 Code) | - | Astronomy |