The XXXG-00W0 Wing Gundam Zero (ウイングガンダムゼロ EW Uingu Gandamu Zero?) (aka Wing Zero) is a mobile suit that appears in the OVA/movie Mobile Suit Gundam Wing Endless Waltz and the manga Mobile Suit Gundam Wing Endless Waltz: Glory of the Losers.

Wing Zero was based on the Zero Frame technology developed by the five Gundam Scientists, which was an inner frame with all the necessary components for the mobile suit to operate, completely separate from the armor platings and energy conduits for weapons. The performance of the frame itself surpasses that of the OZ-00MS Tallgeese, and the complete separation of armor and internal structure allows Wing Zero to continue fighting after losing up to 90% of its armor.

In the Glory of the Losers manga, Wing Zero is developed from the wreckage of the destroyed Wing Gundam Proto Zero, and upgraded with wing binders from the OZ-00MS Tallgeese Flugel. It combines the armament and equipment of the TV version and the EW version, such as having a shield and being able to transform into Neo-Bird Mode.