Yul Brynner is the only actor to have played a lead role in a Richard Rodgers and Oscar Hammerstein II production both on the stage and on the screen, winning a Tony and an Oscar, respectively. He also played the role on the small screen in the Anna and the King tv series.
Deborah Kerr suffered continual bruising from the hoops in her skirt while shooting the "Shall We Dance" sequence.
In Thailand (previously called Siam), the royal family is held in very high esteem. Thailand banned the film due to historical inaccuracies and perceived disrespect to the monarchy. The real-life Prince Chulalongkorn became King Chulalongkorn, who led the way for modernization, improved relations with the West, and instituted many important cultural and social reforms. "Masked: The Life of Anna Leonowens, Schoolmistress at the Court of Siam," by Alfred Habegger corrects the many aspects of Anna's stated story.
At one point, Fox executives suggested that the story be changed so that the King would be gored by a white elephant, rather than become ill because of a personal humiliation. Understandably, this made Yul Brynner furious, and he insisted that the story stick to the stage version.
Deborah Kerr's uncredited voice double Marni Nixon said that she realized the keys of Anna's songs were very low for her, and at 21 she was too young for it. A modifier was placed in Nixon's microphone to make her voice sound deeper and more mature. "I have a very light, bright ring to my voice, and I tried to take that out" she said. "But they were able to use this modifier to emphasize the lower partials of my voice. I also remember having a terrible cold at the time, not being able to breathe in those recording sessions. But that probably helped in matching Deborah's voice, deepening it."