| 角色 | 饰演者 | 角色介绍 |
| 阿莉埃蒂 | 志田未来 | |
| 翔 | 神木隆之介 | |
| 荷米莉 | 大竹忍 | |
| 波德 | 三浦友和 | |
| 贞子 | 竹下景子 | |
| 春 | 树木希林 | |
| 斯莱碧 | 藤原龙也 | |
| Pod (voice: English version) | 威尔·阿奈特 | |
| Sadoko (voice: English version) | 卡洛尔·伯纳特 | |
| Sh? (voice: English version) | 大卫·亨瑞 | |
| Rodent Control Serviceman (voice: English version) | Peter Jason | |
| Arrietty (voice: English version) | Bridgit Mendler | |
| Homily (voice: English version) | 艾米·波勒 | |
| Arrietty (voice: UK version) | 西尔莎·罗南 | |
| Pod (voice: UK version) | 马克·斯特朗 | |
| Homily (voice: UK version) | 奥莉薇娅·柯尔曼 | |
| Spiller (voice: US version) | Moises Arias | |
| Haru (voice: UK version) | 杰拉尔丁·麦克伊万 | |
| Sadako (voice: UK version) | 菲丽达·劳 | |
| Additional Voices (voice: US version) | 弗兰克·马歇尔 | |
| Additional Voices (voice: US version) | 凯利·柯克帕特里克 | |
| Sh? (voice: UK version) | 汤姆·赫兰德 | |
| Spiller (voice: UK version) | Luke Allen-Gale | |
| Aunt Jessica (voice: US version) | Gracle Poletti | |
| Harachi (voice: US version) | Dale Sison | |
| (voice: UK version) | Ray Gillon |
