Arlo Mertz Filmography
| 2024 | Bubbles · as Penny Day |
| 2022 | The Terminal List (TV Series) · as Lucy Reece |
| 2022 | The First Lady (2022) (TV Series) · as Young Susan Ford |
| 2021 | On the Verge (2021) (TV Series) · as Prop Child |
| 2020 | Mank · as Child Star |
| 2019 | Lucy in the Sky · as Emily |
| 2018 | |
| 2016 | A Boy Called Po · as Land Of Color Child |