Aiko Koyama is a Japanese manga artist known for creating the series Kiyo in Kyoto: From the Maiko House. Born in Towada in Aomori Prefecture, she was raised in Yokohama. Her career in manga began after working as an assistant to established artists Shinji Saijo and Makoto Raiku. In 2001, she won the Manga College Effort Award and made her debut with the work Nichijou Sensen in a special issue of Shonen Sunday.

Before her breakthrough success, Koyama created several other manga series, including Ping Pong Rush in 2009, Chirori in 2011, and Kinrou Crescendo in 2014. Her most significant work, Maiko-san chi no Makanai-san, known in English as Kiyo in Kyoto: From the Maiko House, began serialization in Shogakukan's Weekly Shōnen Sunday magazine in December 2016. The series follows Kiyo, a young woman who moves to Kyoto with her friend Sumire to become a maiko apprentice, but instead finds her calling as the cook at the maiko house where they live.

The manga has been commercially successful, with over 2.7 million copies in circulation by September 2022, and has been collected into numerous tankōbon volumes. In 2020, it received the 65th Shogakukan Manga Award in the shōnen category. The work has been adapted into multiple formats. An anime television series produced by J.C.Staff aired worldwide on NHK World from February 2021 to January 2022, running for twelve episodes. A live-action series adaptation, titled The Makanai: Cooking for the Maiko House, was directed by Hirokazu Kore-eda and premiered on Netflix in January 2023.

Koyama's artistic identity is characterized by delicate storytelling focused on everyday life, interpersonal relationships, and cultural details of Japan. Her work on Kiyo in Kyoto is noted for its immersive approach, involving on-site research in Kyoto to accurately portray the traditions and daily routines of maiko and geiko culture. Her career reflects a sustained focus on slice-of-life narratives that explore traditional Japanese settings through contemporary perspectives.