The Dumfries-born 30-year-old, known for his work with huge names such as Rihanna and Rita Ora as well as his own hits, made almost £40 million in the 12 months to June, according to American business magazine Forbes.
It was an increase of more than £12 million on the previous year, meaning he comfortably beat the second highest earning DJ, Frenchman David Guetta, who had estimated earnings of £18 million. Avicii and veteran Tiësto shared the number three slot.
Harris, real name Adam Wiles, has had a string of major hits with nine top singles from his latest album 18 Months. However, his life was not always so glamorous, having worked as a shelf stacker in Marks & Spencer in Dumfries. He shot to fame after uploading his tracks onto the website Myspace, winning a record deal in 2006.