Trivia / Werewolf of London
- Fake Nationality: Swedish Warner Oland playing Asian Dr. Yogami.
- What Could Have Been: The original werewolf design by Jack Pierce was reportedly similar to the one in The Wolf Man (1941), but Glendon's actor Henry Hull refused to wear it.
- Bela Lugosi was considered for the role of Dr. Yogami.
- Universal originally planned to do a film version of Guy Endore's book The Werewolf of Paris, but the plans fell through when Endore was hired by Metro-Goldwyn-Mayer as a script writer.