- California Doubling: The African scenes were shot in Hawaii.
- Fake Nationality: In both versions, Jill Young was born and raised in Africa. Terry Moore was born in Glendale, California. At least Charlize Theron is South African. Naveen Andrews plays Pindi, an African, in the 1998 remake. Andrews is a British Indian from London.
- Market-Based Title: Released in Britain as Mighty Joe while several other countries used some variation of My Friend Joe.
- Name's the Same: The titular character shares the same name with the leader of the Pharoahs from American Graffiti.
- What Could Have Been: An Animated Adaptation was planned in the late 90s, but after the remake bombed it was canned.
Trivia / Mighty Joe Young