The Royal Quiet Deluxe was a portable typewriter, made by the Royal Typewriter Company, from 1939 until 1959. The first-generation Quiet Deluxe was the first Royal to feature Magic Margin. The first generation of Royal Quiet Deluxe was manufactured from 1939 until 1948, with a gap in production due to World War II. It was the typewriter of choice for Ernest Hemingway.

In the late 1940s, the Royal Quiet Deluxe was redesigned by Henry Dreyfuss. It was redesigned again in 1950, with the corners rounded off. By 1955, it was being offered in a choice of six colors, and gray. According to The Typewriter Database, the last Royal Quiet Deluxe typewriters were made in 1957.