Captain Ralph Crewe is Sara's young and wealthy father who adores and pampers her. He is a British army officer stationed in India and sends Sara to England for her schooling.

Miss Maria Minchin is the schoolmistress of the seminary with a cold demeanor and a focus on wealth, often clashing with Sara's unique and intelligent nature.

Miss Amelia Minchin is the timid and obedient younger sister of Miss Minchin, often overshadowed by her domineering sibling but eventually confronts her over mistreatment of Sara.

Lavinia Herbert is a nearly 13-year-old student at the seminary who becomes envious of Sara’s clothing and leadership, often acting spitefully towards her.

Ermengarde is a pupil at the seminary who struggles with academics but becomes one of Sara's close friends due to Sara's kindness and empathy.

Lottie is the youngest pupil at the seminary, who often cries due to missing her mother, and finds comfort in Sara’s nurturing presence.

Becky is the young scullery maid at the seminary, befriended by Sara, who helps her through her storytelling and kindness.

The Carmichaels are a warm and prosperous family noticed by Sara, who feels a connection to their joyful lifestyle.

Ram Dass is Mr. Carrisford's sensitive and courteous Indian man-servant who becomes a secret benefactor to Sara.

Mr. Carrisford, also known as the "Indian Gentleman," lives next to the seminary and unknowingly becomes a friend and benefactor to Sara.

Anne is a hungry child whom Sara meets outside a bakery, representing those less fortunate whom Sara tries to help despite her own struggles.