She was fifth on a list of the people with the most power in the movie-making world.
Steven Spielberg, Tom Hanks, Ron Howard and Pirates of the Caribbean producer Jerry Bruckheimer all finished above her.
Chat-show host Oprah Winfrey and actress Nicole Kidman were also in the top 10, but aren't as powerful as JK.
JK has agreed that a German magazine sold by homeless people there can print the first chapter of The Order of the Phoenix.
Although it's been out for months in the UK, the translated versions are only just hitting the shops - and the German one isn't out until 8 November.
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