The XXXG-01W Wing Gundam (aka Gundam Zero-One) is the titular mobile suit of the Mobile Suit Gundam Wing series. The unit was primarily piloted by Heero Yuy.

Out of the five original Gundams created for Operation Meteor, Wing Gundam is the most well-balanced in terms of abilities and bears the closest resemblance to their common ancestor: the XXXG-00W0 Wing Gundam Zero. Similar to Wing Zero, the Wing Gundam can transform into an alternate flight form known as "Bird Mode" and has a powerful Buster Rifle as part of its armaments. However, the "ZERO System" interface (which had technical problems) and other parts considered to be excessive were not included, and the skills of the pilot are needed to make up for the shortfall.

The major contributor to Wing's mobility is the pair of wing units on the backpack. These units not only generate lift but can also change the aerodynamic characteristics of the mobile suit through the movements of their individual panels, supporting a range of speeds from stall to hypersonic. Even in outer space, the wing units exhibit high attitude control capability using both AMBAC and built-in vernier thrusters. By transforming into Bird Mode, Wing's mobility and movement range are increased further, allowing it to conduct operations that other Gundams could not. The leg thrusters on the back of the knees serve as the main verniers in Bird Mode and are also used for dashing on the ground in MS mode.

The Wing Gundam EW is Hajime Katoki's redesign of Wing created after the release of the Gundam Wing sequel OVA/movie Endless Waltz, which has been featured in the Glory of the Losers manga re-telling of the series (among other works). The redesigned Wing retains largely the same armament and abilities, but resembles Wing Zero in appearance even more than before and can be equipped with extra energy cartridges to enable the Buster Rifle to fire a maximum of nine shots instead of three.