Which Hogwarts headmaster did J.K. Rowling create as Harry Potter’s mentor?

J.K. Rowling created Albus Dumbledore as Harry Potter’s mentor and the headmaster of Hogwarts.

Dumbledore is introduced as the powerful wizard who helps place Harry with the Dursley family and later welcomes him to Hogwarts. Across the novels, he guides Harry through the history of Lord Voldemort, the nature of the Horcruxes and the choices needed to defeat Voldemort.

The character is not simply an all-knowing guide. Rowling gradually reveals Dumbledore’s earlier mistakes, including his youthful association with Gellert Grindelwald and his temptation by power. Those details make his mentorship more complicated than a straightforward teacher-student relationship.

Readers sometimes identify Minerva McGonagall as Harry’s main Hogwarts authority because she is his head of house and later becomes headmistress. However, Dumbledore is the headmaster who serves as Harry’s principal mentor for most of the original series.