Jo is a common name that can refer to both males and females. It is often used as a short form of names like Joseph or Joanne. The name has various cultural significance and is popular in many English-speaking countries. In addition to being a name, "Jo" can also refer to characters in literature, such as Jo March from Little Women by Louisa May Alcott. This character is known for her strong-willed personality and passion for writing, making her a beloved figure in classic literature.