Miyabi Momoyama is a human character in the 2018 *GeGeGe no Kitarō* anime. She is a classmate and friend of Mana Inuyama. Miyabi has fair skin and straight, dull green hair featuring a distinctive lock hanging between her eyes, complemented by dull violet irises. She consistently wears her school uniform: a white long-sleeved collared shirt, medium-length teal skirt, matching tie, short white socks, and brown-tipped shoes, adding a light teal long-sleeved jacket in colder weather. Her casual outfit consists of an orange T-shirt with yellow trim and a horizontal yellow stripe, olive green shorts, and brown strap sandals.

Frequently appearing alongside Mana, Miyabi first observes a class tour of a track stadium under construction, stating she sees nothing when Mana inquires about pillars. She later walks with Mana and another school friend. In episode 15, she and Mana notice Kirara Fusano walking home; Miyabi later reacts with surprise to Kirara's transformed appearance post-spirit surgery. Episode 25 sees Miyabi suggest using a cursed app for retaliation after Mana receives a hurtful message via RAIN from Karin Yamane, downloading it herself.

Miyabi receives focused development in episode 52 during a journey to Kinoko's Forest in another world. Initially enjoying the forest, she experiences gradual aging during her stay, leading her to gain a deeper understanding of her mother's perspective and emotions. Her surname, Momoyama, combines the Japanese words for "peach" (桃, momo) and "mountain" (山, yama), while her given name, Miyabi (雅), means "elegant" or "graceful". She is also informally called "Miya" (みや).