Bella Maclean (born in 1997 or 1998) is a British actress. On television, she appeared in the fourth season of the Netflix series Sex Education (2023) and in the Disney+ series Rivals (2024). She is also known for the role of Martha in the 2021 London revival of the musical Spring Awakening.

Maclean was born in New York City to British parents. She spent her early childhood in New York due to her parents' work, after which they returned to England and settled in East Sussex when she was 10 years old. In 2020, Maclean graduated from the Guildhall School of Music and Drama with a Bachelor of Arts degree in acting.

Maclean's professional stage debut came in the role of Martha in the 2021 London revival of Spring Awakening at the Almeida Theatre. Theatre critic Fiona Mountford described her performance as "a striking piece of work as Martha." In 2024, she returned to the stage as Bella Wilfer in the National Theatre production of London Tide, a musical adaptation of Charles Dickens's novel Our Mutual Friend. The production was directed by Ian Rickson, adapted by Ben Power, with music by Powers and PJ Harvey. Although the play and musical score received mixed reviews, Maclean's performance was received positively. The official cast recording was released in October.

In 2023, Maclean made her television debut in two episodes of the BBC One police drama Silent Witness. She joined the cast of the Netflix comedy-drama Sex Education in its fourth and final season as Jem. She also appeared in the short films Dragged Up and La La Means I Love You.