Top 10 Most Iconic Book Series of All Time

C.S. Lewis published all seven novels in his Narnia series between 1950 and 1956, creating a Christian allegorical fantasy world that has sold over 100 million copies in 47 languages. The series introduced a generation of children to ideas of sacrifice, redemption, and cosmological struggle through the figure of the lion Aslan, widely understood as a Christ allegory. Three major film adaptations were produced between 2005 and 2010, and a new Netflix adaptation is currently in development. The books remain among the most enduringly popular fantasy series ever written, beloved by readers across religious and secular traditions alike.

Frank Herbert's Dune (1965) and its five sequels are the best-selling science fiction series in history, with total sales exceeding 20 million copies for the original novel alone. Herbert's exploration of ecology, religion, politics, and the dangers of messianic leadership provided a template that directly influenced Star Wars, The Matrix, and virtually every large-scale science fiction world-building project that followed. Denis Villeneuve's two-part film adaptation (2021-2024) grossed over $1.1 billion combined and won six Academy Awards. The series is studied in university courses on environmental science, political theory, and philosophy of religion.

Terry Pratchett's 41-novel Discworld series (1983-2015) is one of the most sustained achievements in satirical fiction in the English language, selling over 85 million copies in 37 languages and making Pratchett the UK's best-selling author of the 1990s. Set on a flat world carried through space on the backs of four elephants standing on a giant turtle, the series used fantasy conventions to dissect and mock every human institution — death, war, religion, capitalism, the media, and opera. Pratchett was knighted in 2009, and the BBC named him the seventh most influential figure in British cultural life.

Philip Pullman's trilogy — Northern Lights (1995), The Subtle Knife (1997), and The Amber Spyglass (2000) — sold over 17.5 million copies and made Pullman the first children's author to win the Whitbread Book of the Year Award (for The Amber Spyglass in 2001). The series attracted fierce controversy from religious groups for its critique of institutional religion and its humanist theology, while winning devoted readers worldwide for its extraordinary world-building and philosophical depth. The BBC and HBO's co-production His Dark Materials (2019-2022) ran for three seasons, and Pullman continued the universe with a companion trilogy, The Book of Dust.

Isaac Asimov's Foundation series — seven novels published between 1951 and 1993, with the original trilogy serialised in Astounding Science Fiction from 1942 — introduced the concept of psychohistory, a fictional mathematics predicting the behaviour of civilisations, and traced the fall and planned restoration of a Galactic Empire across thousands of years. The series won the Hugo Award for "Best All-Time Series" in 1966, the only time that award has ever been given. Elon Musk and numerous tech founders have cited Foundation as their foundational text; Apple TV's adaptation premiered in 2021 and was renewed for multiple seasons.

Arthur Conan Doyle's four novels and 56 short stories featuring Sherlock Holmes, published between 1887 and 1927, established the template for modern detective fiction and created arguably the most adapted fictional character in literary history — with over 25,000 stage productions, films, television series, and other adaptations recorded by the Guinness World Records. Holmes and Watson appear in more films than any other literary characters. Doyle attempted to kill Holmes in 1893 — public outrage was so severe that he was forced to resurrect the character ten years later, marking the first time reader demand overruled an author's creative decision.

Ian Fleming wrote 14 novels and two short story collections featuring British Secret Service agent James Bond between 1953 and his death in 1964, establishing the modern spy thriller as a genre. The Eon Productions film franchise — 25 official films released between 1962 and 2021 — is the longest-running film series in history and has grossed over $7.8 billion at the global box office, making Bond one of the highest-grossing media franchises of all time. Fleming's novels sold over 100 million copies before the first film was released; they have now sold well over 100 million in their own right, and the Bond franchise as a whole is valued at over $14 billion.