Trivia: Roger Moore was Fleming's original choice to play 007, but he was under a network contract for the television show "The Saint". Other actors who were considered for the role of James Bond included Cary Grant, Trevor Howard, Rex Harrison and David Niven - he would play the role of Bond in the spoof 1967 film "Casino Royale".
Trivia: In the scene in Dr No's apartments, Bond does a double-take at a painting displayed on an easel. It was in fact a copy of Goya's "The Duke of Wellington", the original of which had been stolen in a raid on a museum shortly before filming began. Producers thought that it would be interesting to conceive that "Dr No" himself had arranged for the real life theft.
Trivia: Ian Fleming wanted his cousin Christopher Lee to play "Dr. No". Due to other projects, Lee had to turn the role down, but was later cast as "Scaramanga" in "The Man With The Golden Gun". Actor Max Von Sydow was also offered the part - he would later be cast as "Ernst Stavro Blofeld" in the non-Eon film "Never Say Never Again".
Trivia: Ursula Andress was dubbed throughout the film by Monica ver der Zyl, with the exception of when she sings "Underneath The Mango Tree" when she first appears. Her singing voice was then provided by actress Diana Coupland, best known for her role in the 1970's British sitcom "Bless This House.
Trivia: A mistake in translation saw the film being released in Japan with the title - "We Don't Want A Doctor".
Trivia: Because Dr No's lair is underwater, you can see fish swimming through the windows. However, an error was made when using footage of fish so they look larger than they would. In order to get around this, they added in dialogue where Dr No explains how the window works like a magnifying glass.
Trivia: Crab Key is an anagram of "Car Key B", which was writer Ian Fleming's favourite key for opening his car.
Trivia: The film was supposed to cost $1 million, but when the budget overran by $100,000, the studio seriously considered shutting down the entire production.