The world’s number one book is The Da Vinci Code by Dan Brown. This best-selling novel has sold over 80 million copies since its release in 2003 and has been translated into 44 languages. It is the first book in the Robert Langdon series and follows the story of Harvard professor Robert Langdon as he unravels a mystery surrounding the death of a Louvre curator.

The Da Vinci Code is the best-selling book of all time, according to the list of the Top 100 best selling books of all time. It is followed by the Harry Potter series by J.K. Rowling, with the seventh and final book in the series, Harry Potter and the Deathly Hallows, coming in at number two. The first book in the series, Harry Potter and the Philosopher’s Stone, is number three on the list, and the fifth book in the series, Harry Potter and the Order of the Phoenix, is number four.

The Da Vinci Code has been adapted into a movie, starring Tom Hanks as Robert Langdon, and has spawned several sequels. It has also been the subject of much controversy, with some religious groups objecting to its themes and interpretations of Christian history. Despite this, the book remains one of the most popular and widely read books of all time.

The success of The Da Vinci Code has made Dan Brown one of the most successful authors of all time. His other works include Angels & Demons, The Lost Symbol, Inferno, and Origin. He has sold over 200 million copies of his books worldwide and is one of the most popular authors in the world.

The Da Vinci Code is a thrilling and captivating read that has enthralled readers for over a decade. It is no surprise that it is the world’s number one book.