text: Christine Estabrook - Martha Huber (10 episodes, seasons 1, 5, 7-8)
  F
  Patrick Fabian - Frank (2 episodes, season 8)
  Stephanie Faracy - Miss Charlotte (2 episodes, season 7)
  Mike Farrell - Milton Lang (3 episodes, seasons 3-4)
  Miguel Ferrer - Andre Zeller (5 episodes, season 8)
  Nathan Fillion - Adam Mayfair (12 episodes, season 4)
  Joely Fisher - Nina Fletcher (5 episodes, season 2)
  Kurt Fuller - Detective Barton (5 episodes, season 2)
  G
  Albert Garcia - Luis (2 episodes, season 2)
  Jason Gedrick - Rick Coletti (6 episodes, seasons 3-4)
  Ellen Geer - Lillian Simms (4 episodes, seasons 3-4 and 8)
  Mary Pat Gleason - Elenora Butters (2 episodes, seasons 1 and 5)
  Juliette Goglia - Amy Pearce (2 episodes, season 3)
  Currie Graham - Ed Ferrara (9 episodes, seasons 2-3)
  Brian Austin Green - Keith Watson (15 episodes, season 7)
  Melissa Greenspan - Cindy (4 episodes, seasons 7-8)
  Todd Grinnell - Alex Cominis (6 episodes, seasons 5 and 7)
  Bob Gunton - Noah Taylor (10 episodes, seasons 1−2)
  H
  Larry Hagman - Frank Kaminsky (2 episodes, season 7)
  Melinda Page Hamilton - Sister Mary Bernard (3 episodes, season 2)
  Jay Harrington - Dr. Ron McCready (7 episodes, season 2)