Little My (original Swedish: Lilla My (literally: "little mu") is a character in the Moomin series of books by Tove Jansson. The character first appeared in the fourth book, The Exploits of Moominpappa (1950). She is a small, determined and fiercely independent Mymble. Little My is brash, aggressive, mischievous and disrespectful, but can also be a good friend when she wants to. She is the Mymble's daughter's younger sister. She was eventually adopted by the Moomin family.