- Who
- Harry Potter
- What
- 500,000,000 unit(s) sold
- Where
- Not Applicable ()
- When
The best-selling children’s book series is Harry Potter by JK Rowling (UK), with sales of more than 500 million copies as of February 2018, according to publisher Bloomsbury. This figure includes sales of the seven books in the original series and three companion volumes.
The tales of wizardry have been translated into more than 80 languages.
