“Diary of a Wimpy Kid” is usually classified as children’s / middle-grade realistic fiction with comedy and satire elements.

Quick Scoop

  • Main category: Children’s / middle-grade book series.
  • Core genre: Realistic fiction (it follows a regular kid in a normal school setting, no magic or sci‑fi).
  • Tone: Humorous, satirical look at school, family, and growing up.
  • Format: Illustrated diary/journal style, mixing text with cartoon drawings.

So if you need a one‑line answer for “what genre is Diary of a Wimpy Kid?” you can safely say: a humorous, illustrated middle‑grade realistic fiction series.

TL;DR: It’s a funny, diary-style realistic fiction series for kids and young teens.