If the question means, are there any contemporary books in Ancient Greek: not a lot, but a few:
- Harry Potter and the Philosopher’s Stone (Ancient Greek Edition): J.K. Rowling: 9781582348261: Amazon.com: Books
- Bruno Coitinho’s answer to What modern books have been translated to ancient languages?: Don Camillo, Sherlock Holmes
- Eleftherios V. Tserkezis’ answer to What modern books have been translated to ancient languages?: Asterix
- Astronautilia
- The Little Prince … in Ancient Greek: Translation of Antoine de Saint-Exupéry’s original text, with vocabulary help: Juan Coderch: 9780957138742: Amazon.com: Books