|Japanese Name:||小山田 まんの子|
|Romanized Name:||Oyamada Mannoko|
|English Name:||Mannoko Oyamada|
|First Appearance:||Chapter 47|
Oyamada Mannoko (小山田 まんの子, Oyamada Mannoko) is a fictional character in the manga series of Shaman King. She is the five-year-old daughter of Oyamada Mansumi and Oyamada Keiko and the younger sister of Oyamada Manta.
Like her brother Manta, she is short, has sandy-brown hair and she has large eyes. She has red bows in her hair and wears a red dress with matching shoes.
She is a master at computers. When Mansumi noticed it, he put her in charge of the Oyamada Company's software department and built up a fortune with stocks. Although she doesn't like that problematic job at all, she uses it to tease Manta when they are together. She loves bespectacled men.
Shaman Fights in TokyoEdit
She is seen in the hospital with Manta and Keiko. She tells her mother about Asakura Yoh and how he and Manta ditch class so they can be together.
Mannoko never appears in the anime series and only makes her appearance in the manga series.