List of best-selling books Between 50 million and 100 million copies Between 50 million and 100 million copies

| Book_series | Author | Original_language | No_of_installments | First_published | Approximate_sales |
|---|---|---|---|---|---|
| Nijntje ( Miffy ) | Dick Bruna | Dutch | 119 | 1955 — present | 85 million |
| Fear Street | R. L. Stine | English | 114 | 1989 — present | 80 million |
| The Vampire Chronicles | Anne Rice | English | 12 | 1976-2003 | 80 million |
| Pippi Longstocking | Astrid Lindgren | Swedish | 3 + 3 picture books | 1945-2001 | 80 million |
| OSS 117 | Jean Bruce | French | 265 | 1949–1992 | 75 million |
| Diary of a Wimpy Kid | Jeff Kinney | English | 7 | 2007–present | 75 million |
| Winnie-the-Pooh | A. A. Milne ; illustrated by E. H. Shepard | English | 2 | 1926–1928 | 70 million |
| Magic Tree House series | Mary Pope Osborne | English | 43 | 1992–present | 70 million |