- f -
- FadeOut : KWordWrap
- FamilyList : KFontChooser
- FileManager : KListView
- Filler : KDialogBase
- Find : KStdGuiItem
- Finished : KSpell
- FinishedNoMisspellingsEncountered : KSpell
- FixedWidthFonts : KFontChooser
- Flat : KToolBar , KLed
- Floating : KPanelExtension , KToolBar
- FontDiffFamily : KFontChooser
- FontDiffSize : KFontChooser
- FontDiffStyle : KFontChooser
- Foreground : KDualColorButton
- Forward : KStdGuiItem
- FORWARD : KEdit