And a whole bunch of 'F' creatures that look like 'one edition' creatures, based on a quick search:
Facet (Planescape Monstrous Compendium Appendix III) [2e]
Faedorne (O2: Blade of Vengeance/AC9: Creature Catalogue/DMR2: Creature Catalog) [BECMI]
Fael (Dark Sun Monstrous Compendium Appendix II: Terrors Beyond Tyr ) [2e]
Faenare (PC2: Top Ballista) [BECMI]
Faerie Fiddler (Dragon #206/Monstrous Compendium Annual Volume Three) [2e]
Faerie Phiz (Dragon #191) [2e]
Faerie, Seelie (Blood Spawn) [2e]
Faerie, Unseelie (Blood Spawn) [2e]
Fainil (Night Flyers) (Dragon #244) [2e]
Falmadaraatha (MC9: Monstrous Compendium Spelljammer Appendix II) [2e]
Famine Spirit (Monster Manual II) [3.0]
Faux Faerie (MC14: Monstrous Compendium Fiend Folio Appendix) [2e]
Faze (Wizards of the Coast web site) [3.5]
Fear Moth (Open Grave) [4e]
Feaster (Dungeon #161) [4e]
Feathered Serpent (HWA2: Nightrage/HWR1: Sons of Azca) [BECMI]
Feeblestar (Wyrmskull Throne) [2e]
Feesu (MC9: Monstrous Compendium Spelljammer Appendix II) [2e]
Feliquine (Red Steel Campaign Expansion/Savage Coast Monstrous Compendium Appendix) [2e]
Fell Taint (Dragon #376) [4e]
Felljaw (Forgotten Realms Campaign Guide) [4e]
Fenette (Shaman) [2e]
Feral Slasher (C3: Lost Island of Castanamir) [1e]
Feral Spirit (Sharn: City of Towers) [3.5]
Feral Yowler (Monster Manual III) [3.5]
Ferret, Giant (Basic Set/Dungeons & Dragons Rules Cyclopedia) [BECMI]
Feverclaw (Wizards of the Coast web site) [3.0]
Fey'ri (Monsters of Faerûn) [3.0]
Feylaar (Dark Sun Monstrous Compendium Appendix II: Terrors Beyond Tyr) [2e]
Feywing (GAZ8: Five Shires/DMR2: Creature Catalog) [BECMI]
Fiendwurm (Monster Manual II) [3.0]
Fiery Face (Crypt of Lyzandred the Mad) [2e]
Fiery Sandhog (Wizards of the Coast web site) [3.0]
Figment (Dungeon #81) [2e]
Figurine, Diamond (Ravenloft Monstrous Compendium Appendix III: Creatures of Darkness) [2e]
Fire Falcon (MC14: Monstrous Compendium Fiend Folio Appendix) [2e]
Fireball Fly (Dragon #94) [1e]
Firebird (MC9: Monstrous Compendium Spelljammer Appendix II) [2e]
Firelich (MC9: Monstrous Compendium Spelljammer Appendix II) [2e]
Firesnake (Dungeon #111/Polyhedron #170) [3.5]
Firethorn (Corsairs of the Great Sea/Monstrous Compendium Annual Volume Two) [2e]
Fireweed (Dragon #227) [2e]
Flailer (Monstrous Compendium Dark Sun Appendix: Terrors of the Desert) [2e]
Flailtail (Dragon #89) [1e]
Flame Spirit (MC6: Monstrous Compendium Kara-Tur Appendix) [2e]
Flame Swallow (SJR4: Practical Planetology) [2e]
Flamewing (Dragon #94) [1e]
Flapsail (Hollow World Boxed Set) [BECMI]
Flard (Dragon #47) [1e]
Flareater (Ruins of Undermountain II/Monstrous Compendium Annual Volume Two) [2e]
Flawder (MC14: Monstrous Compendium Fiend Folio Appendix) [2e]
Fleas of Madness (Adam's Wrath/Ravenloft Monstrous Compendium Appendix III: Creatures of Darkness) [2e]
Flesh Jelly (Monster Manual II) [3.0]
Flesh-Mulcher Tree (Wizards of the Coast web site) [3.0]
Flicker (Immortal Rules) [BECMI]
Flitte (Dragon #40) [1e]
Flitterling (O2: Blade of Vengeance/AC9: Creature Catalogue/DMR2: Creature Catalog) [BECMI]
Floater (Dungeon #70) [2e]
Flolite (Dragon #38) [1e]
Flotsam Ooze (Fiend Folio) [3.0]
Flow Barnacle (SJR1: Lost Ships) [2e]
Flowfiend (MC9: Monstrous Compendium Spelljammer Appendix II) [2e]
Focoid (MC7: Monstrous Compendium Spelljammer Appendix) [2e]
Fogwarden (Dungeon #54/Monstrous Compendium Annual Volume Four) [2e]
Folugub (Psionics Handbook /Expanded Psionics Handbook) [3.0]
Force of Nature (Dragon #304) [3.0]
Forchoreai (Dragon #101) [1e]
Foreigner (Masque of the Red Death) [3.5]
Forest Sloth (Monster Manual II) [3.0]
Forestfolk (Wizards of the Coast web site) [3.5]
Forgewraith (Sharn: City of Towers) [3.5]
Forlarren (Fiend Folio) [1e]
Forlorn Husk (Sandstorm) [3.5]
Foul Gibberer (Dungeon #162) [4e]
Fox, Dire (Dragon #291) [3.0]
Fox, Hoar (Fiend Folio) [1e]
Fox, Arctic (Frostburn) [3.5]
Fractine (MC7: Monstrous Compendium Spelljammer Appendix) [2e]
Frelôn (Savage Coast Monstrous Compendium Appendix) [2e]
Frigidarch (Dragon #129) [1e]
Frog, Archer (Dragon #247) [2e]
Frog, Ghoul (Dragon #247) [2e]
Frog, Firetongue (Dragon #285) [3.0]
Frog, Giant Vampire (Dragon #50) [1e]
Frost Worm (Monster Manual) [3.0]
Frostwind Virago (Monster Manual V) [3.5]
Fungoid (AC8: Dragon Tiles: Revenge of Rusak/AC9: Creature Catalogue/DMR2: Creature Catalog) [BECMI]
Fungus, Cushion (Dragon #172) [2e]
Fungus, Friendly (Dragon #196) [2e]
Fungus, Explodestool (Dragon #89) [1e]
Fungus, Phantom (Monster Manual) [3.0]
Fungus, Fetid (Monster Manual V) [3.5]
Fungus, Vermeil (Savage Coast Monstrous Compendium Appendix) [2e]
Fungus, Slaver (Wizards of the Coast web site) [3.0]
Fungus, Gray (Wizards of the Coast web site) [3.5]
Fungus Hulk (Return to White Plume Mountain) [2e]
Fyrefly (MC14: Monstrous Compendium Fiend Folio Appendix/Monstrous Manual) [2e]