Splatoon 3: Side Order is a 2024 expansion pack for Splatoon 3, a 2022 third-person shooter video game, developed by Nintendo EPD and published by Nintendo for the Nintendo Switch. Announced in February 2023, Side Order is the second part of the Splatoon 3 Expansion Pass. It was released on 22 February 2024.

Splatoon 3 is a 2022 third-person shooter video game developed and published by Nintendo for the Nintendo Switch. It is the third game in the Splatoon series following Splatoon 2. Like its predecessors in the Splatoon series, the game consists of online multiplayer alongside a single-player campaign, both featuring combat based around ink-firing weapons.