| 01513WB | F.I.S. Food Industry Services Ltd | YES | YES | | N/A | N/A | N/A | YES | YES | YES |
| 01259B | F.M.G. Electronics (Distributors) Ltd | NO | YES | | N/A | N/A | N/A | YES | Reg-Pending | Reg-Pending |
| 00448W | Falks Lighting Limited | YES | NO | | YES | YES | YES | YES | YES | YES |
| 00071WB | Fannin Ltd | YES | YES | | YES | YES | YES | YES | YES | YES |
| 00283WB | Farnell Components (Ireland) Ltd | YES | YES | | YES | YES | YES | YES | Reg-Pending | Reg-Pending |
| 01284WB | FDM ARC Manufacturing Ltd | YES | YES | ARC Building Products | N/A | N/A | N/A | YES | YES | YES |
| 00519W | Febvre & Company Ltd | YES | NO | | YES | YES | YES | YES | YES | YES |
| 01291WB | Fergusons Hearing Aid Clinic Ltd | YES | YES | | YES | YES | YES | YES | YES | YES |
| 01130WB | FG Wilson Engineering (Dublin) Ltd | YES | YES | | N/A | N/A | N/A | YES | YES | YES |
| 01267B | Fiat Group Automobiles Ireland Ltd | NO | YES | | N/A | N/A | N/A | YES | YES | YES |
| 00915WB | Fields Retail Limited | YES | YES | | YES | YES | YES | YES | YES | YES |
| 01423W | Fikon Ltd | YES | NO | Bluered | YES | YES | YES | YES | YES | YES |
| 01110WB | Findel Education | YES | YES | Hope Education | YES | YES | YES | YES | YES | YES |
| 00822WB | Finlay Communications (Irl) Ltd | YES | YES | | YES | YES | YES | YES | YES | YES |
| 01558WB | Finna Retail Ltd | YES | YES | Cash Converters | N/A | N/A | N/A | N/A | N/A | Reg-Pending |
| 00813W | Fisher & Paykel Appliances Ltd | YES | NO | | N/A | YES | YES | YES | YES | YES |
| 00991WB | Fisher Scientific Ireland Ltd | YES | YES | | N/A | N/A | YES | YES | YES | YES |
| 00481W | Fitzgerald Lighting Ltd | YES | NO | | YES | YES | YES | YES | NO | NO |
| 00129W | Flaherty Markets Ltd | YES | NO | | YES | YES | YES | YES | YES | YES |
| 01618WB | Flakt Woods (Ireland) Ltd | YES | YES | | Reg-Pending | Reg-Pending | Reg-Pending | Reg-Pending | Reg-Pending | Reg-Pending |
| 01526WB | Flashpoint Medical Systems Ltd | YES | YES | Flashpoint System | N/A | N/A | N/A | N/A | N/A | YES |
| 00152WB | Fleming Medical Ltd | YES | YES | | YES | YES | YES | YES | YES | YES |
| 01543WB | Flux Electrical Services Ltd | YES | YES | | NO | NO | NO | Reg-Pending | Reg-Pending | Reg-Pending |
| 01342B | Fonemenders Ltd | NO | YES | | N/A | N/A | N/A | YES | YES | Reg-Pending |
| 01107WB | Forcefield Active Technology Ltd | YES | YES | | N/A | N/A | N/A | YES | YES | YES |
| 00947WB | Fotovista S.A. | YES | YES | Pixmania | YES | YES | YES | YES | YES | YES |
| 01094W | Frank Flannagan Fittings Ltd | YES | NO | | N/A | N/A | N/A | YES | YES | Reg-Pending |
| 01174W | Frank Haley Ltd | YES | NO | | N/A | YES | YES | YES | YES | YES |
| 01165WB | Freesat | YES | NO | | N/A | N/A | N/A | Reg-Pending | Reg-Pending | NO |
| 00751W | Fresenius Medical Care (Ireland) Ltd | YES | NO | | YES | YES | YES | YES | YES | YES |
| 00147W | Frigoglass Ltd | YES | NO | | YES | YES | YES | YES | YES | YES |
| 00431WB | Frowsley Services Ltd | YES | NO | B.B. Distribution | YES | YES | YES | YES | YES | Reg-Pending |
| 00596W | FTI Fire Technology Ireland Ltd | YES | NO | | YES | YES | YES | YES | YES | YES |
| 01546WB | Fujifilm UK Ltd | YES | YES | Fujifilm Ireland | N/A | N/A | N/A | N/A | N/A | Reg-Pending |
| 01550WB | Fujitsu (Ireland) Ltd | YES | YES | | N/A | N/A | N/A | N/A | N/A | Reg-Pending |
| 00185WB | Fusion Technologies Ltd | YES | YES | | YES | YES | YES | YES | YES | YES |
| 00860W | Future Sounds Ltd | YES | NO | | YES | YES | YES | YES | YES | NO |