- 6 Flapjax
- 2 FleaBaG
- 6 Flesh Head
- 16 Fleshdance
- 2 Fliegenklatsche
- 2 Fliegenklatsche & Willem
- 4 Florian '[UTFC]Starfire' Ries
- 4 Florian 'Akbalder' Guillard
- 2 Florian 'NumbNutz' Sauter
- 24 Florian 'Strogg' Oswald
- 6 flow
- 2 flowX+fozzel=Bert
- 2 Fluffey
- 10 Fluffy
- 2 FluffyPower
- 2 FnG-Paladin
- 2 Foamy "SVOAV" Gal
- 51 FoamyGal
- 3 FoolsParadise
- 2 Ford_Prefect
- 6 Forestal
- 2 Forestar
- 3 Forks_M7
- 4 FormStranger
- 4 Forrest "y3llow5" Dowling
- 3 Foufoune_Rose
- 2 FoulMan
- 2 Fox Keri
- 2 Fox Leader
- 2 fps_freak
- 2 Fragaholic (orig: Smoerble)
- 2 Fragaholic (orig: Smoerble)MUSIC ADDED BY 3DTRAY
- 2 Fragaholic (updated for UT(_@_)_SOULREAVER)
- 9 Fragaholic (updated for UTeko)
- 2 Fraggaholic
- 7 Fragman{MOK}
- 133 FraGnBraG
- 4 FraGnBraG and EPIC Mappers
- 9 fragswill
- 5 FragTastic
- 2 FrameR-A-T-E
- 4 Francesco 'minifloppy' Camarlinghi
- 6 Francesco Biscazzo
- 4 Francis "Fritz-x" De Block
- 14 Francis 'MrBee' Briau
- 2 Francisco 'GringoLoco' Galárraga
- 2 francocaro
- 50 Francois Lacombe aka Orion(Co30)
- 3 Frank
- 4 Frank "Beezer" Imbesi
- 3 Frank "MagotBrain" Schlatterer
- 20 Frank "Scorpion" Meyer
- 10 Frank 'Die Harder' Scholten
- 2 Frank 'FMC' Johanns
- 5 Frank 'r@yden' Petri | converted by
- 2 Frank 'ROX' Aartman
- 3 Frank Herbert
- 2 Frank Pepermans
- 2 Frank Saya
- 9 Frank Willett
- 7 Frank'Noz'Bakker
- 3 frank_for_sandra
- 2 Franz "McBlackJack" Marcks
- 2 Frase
- 3 Fred
- 3 Fred Bickford
- 22 Fred Blair
- 2 Freddo
- 4 Fredy
- 2 Freeman
- 2 FreEp
- 3 Freeze