This page containing all characters mentioned or have appearance in Return to Castle Wolfenstein (in order of characters first actual appearance or for characters only mentioned in order of mention).
- Simon the Wanderer
- Dark Knights
- Heinrich I
- OSA Major (Cursed Sands only)
- William Joseph Blazkowicz
- Frank Webley
- Gerhard Wechsler (Mentioned only) (Cursed Sands only)
- Olaf Schaap (Cursed Sands only)
- Karsten Mehler (Mentioned only) (Cursed Sands only)
- Thomas Schluter (Mentioned only) (Cursed Sands only)
- Sonja Fleischer (Mentioned only) (Cursed Sands only)
- Tobias Metzger (Mentioned only) (Cursed Sands only)
- Helga von Bulow
- Werner Schmidt (Cursed Sands only)
- Dieter Lehrer (Mentioned only) (Cursed Sands only)
- Erik Lederer (Mentioned only) (Cursed Sands only)
- Gustav Mehlinger (Mentioned only) (Cursed Sands only)
- Zee
- OSA Director
- Jack Stone
- Murphy
- Higgs
- Wilhelm Jurgen
- Dieter Giereg
- Wolfgang Ungeschickt (Mentioned only)
- Kessler
- Karl Villigut
- Epp (Operation Resurrection only)
- A. Zemph
- Otto (Mentioned only)
- Lofen
- Olaric
- Walter Steiner (Mentioned only)
- Hans
- B. Vorsichtig (Mentioned only)
- Gustov
- A. Shosshund (Mentioned only)
- Wilhelm Strasse
- Vernor Shmutzig (Mentioned only)
- Carl Bohren (Mentioned only)
- Adolf Hitler (Mentioned only)
- Charlemagne (Mentioned only)
- Eva
- Merkwurdigliebe
- Hochstedder
- von Stauff
- Strache
- Burkhalter
- Haupfman
- Shurber
- Marianna Blavatsky
- Wolfgang Statz
- Heinrich Himmler