* CaliforniaDoubling: The underwater scenes are supposed to be Gibraltar, but were shot in the Bahamas; also, since Japan didn't allow for StuffBlowingUp in a national park, parts of the Little Nellie battle were shot in Spain.
* CompletelyDifferentTitle:
** ''One Doesn't Live More Than Twice'' (France)
** ''007 Dies Twice'' (Japan)
** ''One Only Lives Twice'' (Germany and Latin America)
** ''James Bond In Japan'' (Norway and Greece)
** ''You Live Only Twice'' (Finland)
** ''With 007 You Only Live Twice'' (Brazil and Portugal)
** 007 Seized The Rocket Base'' (China).
* TheDanza: Aki is played by Akiko Wakabayashi. The character, formerly "Suki," was renamed at her request. (Mie Hama had been supposed to play this role until she was given a part that better suited her limited grasp of English.)
* DuelingMovies: With the unofficial parody ''Film/CasinoRoyale1967''. Naturally, the official Bond film triumphed.
* ExecutiveMeddling: Producer Harry Saltzman hired Jan Werich to play Blofeld without consulting director Lewis Gilbert or fellow producer Albert Broccoli, an example of the increasingly eccentric decisions that eventually helped force him off the series.
* HostilityOnTheSet: The atmosphere during the production was reportedly chilly. Creator/SeanConnery had grown bored with the Bond role and frustrated with the public fascination with the franchise. The posters declaring that "Sean Connery IS James Bond" didn't help. Furthermore, Bernard Lee and Lois Maxwell were appearing in the knock-off film ''Film/OperationDouble007'' with Neil Connery, Sean's younger brother, and the elder Connery let them know he was not happy about it. Furthermore, Connery's relationship with Broccoli and Saltzman had deteriorated to the point where he refused to act if either of them were onset.
* TheOtherDarrin: Creator/DonaldPleasence takes over the role of Blofeld from the Anthony Dawson/Eric Pohlmann combo that had previously been playing the part...
* TheOtherMarty: ...however, he wasn't the first person who attempted to do so. The original actor they cast was Jan Werich, who proved completely wrong for the role for [[https://upload.wikimedia.org/wikipedia/en/d/d8/Blofeld_by_Jan_Werich.jpg looking too grandfatherly]] (being even compared with Santa Claus) and so was replaced by Pleasence. In the final cut, many of Blofeld's scenes prior to TheReveal still feature Werich, as only his hands and legs are visible, meaning that all they needed to do was have Pleasence overdub his dialogue.
* SerendipityWritesThePlot:
** Mie Hama was having trouble learning English, while Akiko Wakabayashi had much progress. Since the former [[SeriousBusiness took this so seriously]] that she threatened to [[{{Seppuku}} kill herself]] if fired (she was afraid of dishonoring her family), the producers just traded the roles between actresses, as Kissy appears much later in the story and has fewer lines.
** The Toyota 2000GT wasn't supposed to be a convertible, but it got converted into one due to Creator/SeanConnery's height.
* ThrowItIn: While everyone else is remarkably calm, Blofeld's cat gets completely freaked out and tries to escape when the control room starts taking structural damage.
* WhatCouldHaveBeen:
** Music/FrankSinatra was asked to perform the title song, but he declined. So, the job went to his daughter Nancy.
** Creator/ToshiroMifune was considered for Tanaka, but he was busy with ''Film/GrandPrix''.
* YouLookFamiliar:
** Burt Kwouk makes his second appearance in an EON Bond movie as a Japanese SPECTRE operative (he was in ''Film/{{Goldfinger}}'' as Mr. Ling)
** Charles Gray would later play Blofeld in ''Film/DiamondsAreForever''.
** Tsai Chin, who plays the girl Bond sleeps with in the opening teaser, played one of Bond's poker adversaries in ''Film/CasinoRoyale2006''.