Jo March is the protagonist of Little Women by Louisa May Alcott. Although the narrator of the novel is omniscient, and has access to the thoughts of all the characters in the novel, Jo March is the character whose viewpoint is most dominant, and the character with whom most readers sympathize.
Jo in many ways is a self-portrait by Alcott, of a young girl who is talented, intelligent, and independent. She is a tomboy, who is uncomfortable with the constraints imposed by conventional notions of femininity, and has a quick temper, something considered inappropriate for a girl. In the novel, Jo struggles to balance her love for and loyalty towards her family with her desire to be true to her own talent as a writer and sense of creative vocation. She rejects the proposal of Laurie, because marrying him would require subsuming her talent in domesticity, but eventually creates a family with Professor Fritz Bhaer, who is supportive of her writing and intellectual interests.