- California Doubling: The interior of Saint Mark's Basilica was actually a detailed reconstruction built at Cinecitta Studios. The real location was unsuitable for filming.
- Fake Nationality: The German Aschenbach is played by the English Dirk Bogarde, and his wife is played by the American Marisa Berenson. The Polish Tadzio is played by Björn Andrésen, a Swede. His mother is played by Silvana Mangano, who is Italian.
- What Could Have Been:
- José Ferrer was preparing a film adaptation in 1964, but it fell through.
- Luchino Visconti considered Alec Guinness, John Gielgud, and Burt Lancaster for the role of Aschenbach. Lancaster lobbied especially hard for the part, and would later play a similar character in Visconti's Conversation Piece.
- Visconti originally intended to cast a 12-year-old as Tadzio. He approached Leif Garrett, but he turned it down after his parents read the script.
- Visconti asked Ida Galli, whom he'd directed in The Leopard, to play Tadzio's mother. She was forced to turn it down to a scheduling conflict with The Weekend Murders.
- John Moulder-Brown (who later played Prince Otto in Visconti's Ludwig) was considered for Tadzio, but was deemed too mature for the part.
Trivia / Morte a Venezia