The XXXG-01W Wing Gundam (aka Zero-One or Gundam 01) is the titular mobile suit of the anime Mobile Suit Gundam Wing. It 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. Like 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. Its cockpit is a spherical capsule surrounded by a linear frame, and it swivels in the same direction as the mobile suit's head. Unlike the standard OZ cockpit, it is a floating cockpit with a shock mitigation function.

The major contributor to Wing's mobility is the pair of wing units on its 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, these 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.