According to various sources, J.K. Rowlings net worth is estimated to be around $1 billion as of 2023. Her fortune is primarily derived from book sales, movie adaptations, theme parks, and various merchandise associated with the Harry Potter franchise. Its important to note that her net worth is not solely based on her Harry Potter-related endeavors. She has also written adult fiction, such as The Casual Vacancy, and created the Cormoran Strike series under the pen name Robert Galbraith. Rowling is also strongly involved in philanthropy and has used her wealth and influence to support many causes and charities dear to her.