Thirty Days to Better English

This page provides lists of best-selling books and book series to date and in any language. "Best-selling" refers to the estimated number of copies sold of each book, rather than the number of books printed or currently owned. Comics and textbooks are not included in this list. The books are listed according to the highest sales estimate as reported in reliable, independent sources. According to Guinness World Records, the Bible is the best-selling book of all time with an estimated 5 to 7 billion copies sold and distributed as of 2021.