木米儿子 （瑞典语为 Mumintrollet，芬兰语为 Muumipeikko）是木米系列的主要人物，也是作者多维·杨逊 （Tove Jansson）创造的第一个人物。木米儿子，也就是木米，是木米爸爸和木米妈妈的唯一的孩子。木米儿子和他的父母木米爸爸还有木米妈妈都住在木米之家里。木米儿子也是世界上最有名的一个芬兰动画人物。木米儿子的生日是8月7号。

Moomintroll (Swedish:Mumintrollet) (Also known as Moomin) is the main character in the Moomin books by Tove Jansson. He lives in the Moominhouse together with his father Moominpappa and his mother Moominmamma and has a keen spirit of adventure. Moomintroll is a 'moomin' - a little white troll with a hippopotamus-like big round nose.