Britt-Marie is a fictional character created by Swedish author Fredrik Backman. She is the protagonist of the novel "Britt-Marie Was Here," which explores themes of loneliness, community, and personal growth. The story follows her as she leaves her unfulfilling life and moves to a small town, where she discovers new friendships and a sense of purpose. Throughout the novel, Britt-Marie grapples with her past and learns to embrace change. Her journey highlights the importance of connection and the impact one person can have on a community, ultimately leading to her transformation and newfound happiness.