25 June 2017 Last updated at 09:35 BST
Anne was a Jewish victim of the Holocaust.
Her diary, which she nicknamed 'Kitty' is a very famous record of her experiences during World War II.
Anne wrote about how she and her family lived in a secret hidden attic in the Netherlands to help them hide from the Nazis.
We spoke to a group of girls who have read Anne's diary, and they said that Anne's optimism and positivity was very relatable and inspiring.
Take a look to find out more...
It's 70 years since Anne Frank's diary was published.