Scholastic has licensed rights to publish in 20 different languages. As of 2018, editions have been published in Italian, Turkish, German, Portuguese, Bulgarian, Finnish, Spanish, Danish, Dutch, Swedish, French, Greek, Norwegian, Polish, Persian, and Chinese. Many foreign-language editions have titles different from the typical English translation, such as the Dutch Het Labyrint ("The Labyrinth") and Portuguese Gregor e a Segunda Profecia ("Gregor and the Second Prophecy"). The second United States English edition (), released in 2013 as part of a boxed set, has cover art by Vivienne To. New United Kingdom editions, published in 2013 () and 2016 (), respectively, have different cover art.
