Which pseudonym did J.K. Rowling use for her crime novels?

J.K. Rowling used the pseudonym Robert Galbraith for her crime novels.

The first Cormoran Strike novel, The Cuckoo’s Calling, was published under the name Robert Galbraith in 2013. Rowling’s identity as the author was initially kept secret, but it was revealed later that year. She continued the series under the same pen name after the disclosure.

Rowling chose a male pseudonym partly to distance the books from the Harry Potter series and to allow the crime novels to be judged without immediate expectations about their author. Robert Galbraith is a fictional author identity, not a separate writer.

The series follows private detective Cormoran Strike and his assistant Robin Ellacott. Its titles include The Silkworm, Career of Evil, Lethal White, Troubled Blood, The Ink Black Heart, and The Running Grave.