Darius the Great Is Not Okay is a young adult novel by , originally published August 28, 2018, by Dial Books. The book has received various awards and has been translated into eight languages (Russian, Japanese, German, Spanish, Portuguese, French, Italian, and Dutch). Darius the Great Is Not Okay follows the personal journey of Darius Kellner, an Iranian–American teenager with clinical depression, as he makes a best friend for life, reconnects with his grandparents, and repairs his relationship with his father.