The main characters in the story are the narrator, his uncle, his aunt, Mangan's sister, and the dead priest, a man who used to live in a back room in the house. Even though the priest is dead, he still plays a role in the story. It is his books that the narrator reads in an effort to escape the drabness of his life on North Richmond Street. There are some minor characters, such as the workers at the bazaar, but their role is a functionary in establishing the true nature of Araby.
Other than the narrator, the most important character in the story is Mangan's sister. She becomes the focus of the narrator's romantic fantasies and inspires his trip to the bazaar which results in his disillusionment at the story's conclusion.