Anna is een verlegen meisje dat vanwege haar gezondheid naar haar oom en tante in een dorp aan de kust wordt gestuurd. Ze stelt zich niet open op tegenover anderen en blijft introvert. Anna ontmoet vervolgens een vreemd meisje genaamd Marnie. Ze worden vrienden, maar geen van de dorpsbewoners weet iets van Marnies bestaan af.
Ja! de film When Marnie was There is nu beschikbaar om te kijken op Netflix in Nederland.
| Production | Tamaki Kojo | Line Producer |
| Writing | 安藤雅司 | Screenplay |
| Writing | 丹羽圭子 | Screenplay |
| Writing | Joan G. Robinson | Novel |
| Writing | 米林宏昌 | Screenplay |
| Directing | 米林宏昌 | Director |
| Art | 佐藤詩穂 | Background Designer |
| Visual Effects | 安藤雅司 | Animation Director |
| Art | 種田陽平 | Production Design |
| Production | 星野康二 | Producer |
| Production | 西村義明 | Producer |
| Art | 種田陽平 | Art Direction |
| Art | 松島英子 | Painter |
| Camera | 藤巻鐘子 | Additional Photography |
| Production | 鈴木敏夫 | Executive Producer |
| Sound | Priscilla Ahn | Theme Song Performance |
| Production | 藤巻直哉 | Co-Producer |
| Art | 西川洋一 | Art Designer |
| Visual Effects | 安藤雅司 | Character Designer |
| Art | 石井弓 | Background Designer |
| Art | 高松洋平 | Art Designer |
| Visual Effects | 濱洲英喜 | Key Animation |
| Visual Effects | 橋本晋治 | Key Animation |
| Visual Effects | 廣田俊輔 | Key Animation |
| Visual Effects | 本間晃 | Key Animation |
| Visual Effects | Kazuyoshi Onoda | Key Animation |
| Production | Tomoko Nakayama | Producer |
| Production | Ryoichi Fukuyama | Co-Producer |
| Sound | 笠松 広司 | Sound Director |
| Art | 神戸あや恵 | Background Designer |
| Art | 大森崇 | Art Designer |
| Art | Ayumu Egawa | Background Designer |
| Art | 男鹿和雄 | Background Designer |
| Sound | 木村絵理子 | Sound Director |
| Production | Shinsuke Nonaka | Production Manager |
| Visual Effects | 粟田務 | Key Animation |
| Visual Effects | Misa Koyasu | Key Animation |
| Visual Effects | 高坂希太郎 | Key Animation |
| Production | 奥田誠治 | Co-Producer |
| Visual Effects | 二木真希子 | Key Animation |
| Art | 伊奈涼子 | Background Designer |
| Visual Effects | 井上鋭 | Key Animation |
| Art | 吉田昇 | Art Designer |
| Visual Effects | 古屋勝悟 | Key Animation |
| Visual Effects | 秦綾子 | Key Animation |
| Visual Effects | 河原奈緒子 | Key Animation |
| Art | 久保友孝 | Background Designer |
| Art | 中村聡子 | Background Designer |
| Art | 武重洋二 | Background Designer |
| Production | Kyohei Ito | Production Manager |
| Art | 林孝輔 | Background Designer |
| Editing | 松原理恵 | Editor |
| Production | 種田陽平 | Production Designer |
| Art | 串田達也 | Background Designer |
| Visual Effects | 末冨慎治 | Key Animation |
| Production | Masami Hosokawa | Producer |
| Art | 春日井直美 | Background Designer |
| Visual Effects | 本田雄 | Key Animation |
| Art | 谷口淳一 | Background Designer |
| Visual Effects | 山下高明 | Key Animation |
| Production | Takuro Okada | Casting |
| Art | 平原さやか | Background Designer |
| Visual Effects | 賀川愛 | Key Animation |
| Visual Effects | 近藤勝也 | Key Animation |
| Visual Effects | Takayuki Hamada | Key Animation |
| Visual Effects | 稲村武志 | Animation Director |
| Art | 鮫島潔 | Background Designer |
| Visual Effects | 横田匡史 | Key Animation |
| Visual Effects | Katsutoshi Nakamura | Key Animation |
| Visual Effects | 和田直也 | Key Animation |
| Visual Effects | 小西賢一 | Key Animation |
| Visual Effects | 田中敦子 | Key Animation |
| Visual Effects | 土屋亮介 | Key Animation |
| Art | 矢野きくよ | Background Designer |
| Visual Effects | 大谷敦子 | Key Animation |
| Visual Effects | Kenichi Yamada | Key Animation |
| Production | Ryûji Hayashi | Casting |
| Art | 新田有花 | Background Designer |
| Visual Effects | 沖浦啓之 | Key Animation |
| Visual Effects | 鈴木美千代 | Key Animation |
| Visual Effects | 山川浩臣 | Key Animation |
| Visual Effects | 田村篤 | Key Animation |
| Visual Effects | 宇佐美萌 | Key Animation |
| Art | 渡邊洋一 | Background Designer |
| Art | 吉岡誠子 | Background Designer |
| Visual Effects | 大塚伸治 | Key Animation |
| Visual Effects | Akiyo Okuda | Key Animation |
| Visual Effects | 山森英司 | Key Animation |
| Sound | 村松崇継 | Music |
| Visual Effects | 山下明彦 | Animation Director |
| Camera | 奥井敦 | Director of Photography |
| Sound | 鈴木修二 | Other |
