《신기동전기 건담 W Endless Waltz》(일본어: 新機動戦記ガンダムW Endless Waltz 신키도 센키 간다무 윙그 엔도레스와르츠[*])는 건담 시리즈의 OVA로 《신기동전기 건담 W》의 속편으로 1997년에 전 3화가 제작되었다. 후에 재편집해 추가 영상을 더한 《특별편》이 추가 공개되었다. 건담 시리즈로서는 최초로 우주세기 이외의 세계관을 무대로한 OVA 작품이 된다.
Mariko, codenamed "Rose Marie", is a leader of an anti-terrorism group, CAT (Counter Attack Terrorism). She lost her husband and son in a terrorist bomb attack at an airport. Also suffering injuries in the blast, she was left with a scar that looked like a rose flower on her chest. A secret summit conference is due to be held in Switzerland, with Marie's team deployed as security. However, it becomes clear terrorists have already made a move to sabotage the meeting...
While performing in a student film, Ataru cuts down Tarozakura, a large, ancient cherry tree. Strange things begin to happen all across Tomobiki: a mountain appears out of nowhere, spring changes to winter, and Lum loses her powers, while those around her act as if she doesn't exist.
