How many books has j k Rowling writen?

J. K. Rowling has written a total of 13 books:

Harry Potter

- Harry Potter and the Philosopher's (Sorcerer's) Stone

- Harry Potter and the Chamber of Secrets

- Harry Potter and the Prisoner of Azkaban

- Harry Potter and the Goblet of Fire

- Harry Potter and the Order of the Phoenix

- Harry Potter and the Half-Blood Prince

- Harry Potter and the Deathly Hallows

Supplements to Harry Potter

- Fantastic Beasts and Where to Find Them

- Quidditch Through the Ages

- The Tales of Beedle the Bard

Cormoran Strike (Under the pseudonym Robert Galbraith)

- The Cuckoo's Calling

- The Silkworm

Other Works

- The Casual Vacancy

She has also written various articles for magazines and newspapers.