Writer of the Harry Potter series, J.K. Rowling is a/an -

J.K Rowling:
- In full, Joanne Kathleen Rowling, (born July 31, 1965, Yate, near Bristol England).
- British author, creator of the popular and critically acclaimed Harry Potter series.
- We are only strong as we are united as weak as we are divided’ is a quote by J.K. Rowling.

Harry Potter Books:
- Harry Potter and the Philosopher’s Stone
- Harry Potter and the Prisoner of Azkaban.
- The Cuckoo’s Calling, Lethal White.
- The Tales of Beedle the Bard
- Harry Potter and the Half-Blood Prince.
- Harry Potter and the Cursed Child.
- Harry Potter and the Deathly Hallows
- Quidditch Through the Ages
- Harry Potter and the Order of the Phoenix.

Source: Britannica.com