It seems like you're trying to ask if J.K. Rowling is the most famous author. While she's incredibly popular and successful, it's difficult to definitively say she's the most famous. There are many other authors with huge global recognition, and fame is subjective.
Here's why it's hard to definitively crown one author as the most famous:
* Different Genres: Fame can be measured in different ways, depending on the genre. Rowling dominates children's fantasy, but authors like Stephen King are titans in horror and have a different kind of fame.
* Cultural Shifts: What's considered "famous" can change over time. Shakespeare is famous for his timeless works, but newer authors may be more popular in the current moment.
* Global Reach: Some authors are more famous in specific regions or countries. It's tough to say definitively who has the biggest global reach.
To answer your question in a more helpful way, J.K. Rowling is undeniably one of the most famous and successful authors in the world. Her Harry Potter series has had a massive impact on pop culture and continues to be immensely popular.