Daniel's mother, described as the hero of the story. She converted to Christianity, leading to their departure from Iran. In the U.S., she works various jobs to support her children while seeking new credentials to practice medicine. Her hope for a better future gives the novel its title.

Daniel's father, who remains in Iran. He shares Persian myths with Daniel during their monthly phone calls, concerned about his son losing his heritage. Massoud's complex relationship with Daniel is colored by past actions, like his time in prison, but also moments of connection.

Daniel's sister, mostly in the background until a pivotal moment. A straight-A student with an entrepreneurial spirit, she seeks to excel in the U.S. Her defining moment in the novel involves standing up for their mother.

Daniel's fifth-grade teacher, to whom the book is addressed along with the reader. Her adept listening and feedback make her Daniel's favorite teacher. She supports him throughout the novel, and Daniel expresses gratitude with a gesture during his father's visit to the school.