The Harry Potter creator was voted the most influential woman in the U.K.by top by leading magazine editors.
The writer, with a fortune valued at £530million by the Sunday Times Rich List, was chosen for her writing skills, tenacity to succeed and philanthropic nature, the National Magazine Company said reports The Telegraph.
Pop star turned fashion designer Victoria Beckham was the runner-up with the Queen in third place.
The list was compiled to mark the centenary of the National Magazine Company which currently publishes 20 magazines including Good Housekeeping, Country Living, Harper's Bazaar, Men's Health, Esquire and Cosmopolitan.
Arnaud de Puyfontaine, chief executive of the National Magazine Company, said:
"The UK is home to an incredible amount of inspirational women and we are lucky enough to have worked with a significant number of them through our various publications over the years."
The top 10 women were ranked with another 90 included in the top 100 list in no particular order.
Business magazine Forbes named Michelle Obamaas the world's most powerful woman.
The Queen, the only British national to feature in the top 100, was placed 41st.
Interesting the 'most influential woman in the UK' recently discovered that she comes from a long line of single mothers after taking part in the television series "Who Do You Think You Are?"
JK Rowling, who brought up her daughter Jessie all alone, found that her great-grand mother Lizzie, great-great-grandmother Salome and great-great-great grandmother Christine - all brought up their kids as lone mothers after splitting from their respective husbands.