List of Luigi sightings in Super Mario 3D World

Similarly to New Super Luigi U, 8-bit sprites of Luigi are hidden in most levels of Super Mario 3D World and its campaign in Super Mario 3D World + Bowser's Fury to celebrate the Year of Luigi, which the original game was released in. The more challenging versions of earlier levels in World Mushroom and World Flower contain 8-bit Luigis in the same locations across both counterparts; as such, only Luigis unique to those levels are listed.

While there are no 8-bit Luigis specific to the Bowser's Fury campaign of Super Mario 3D World + Bowser's Fury, methods of encountering them across both campaigns are noted in their respective sections.