Mobile Suit Gundam 00

Mobile Suit Gundam 00 (機動戦士ガンダム00（ダブルオー）, Kidō Senshi Gandamu Daburu Ō, Mobile Suit Gundam Double-O) is an anime television series, the eleventh installment in Sunrise studio's long-running Gundam franchise comprising two seasons. The series is set on a futuristic Earth and is centered on the exploits of the fictional paramilitary organization Celestial Being and its efforts to rid the world of war and conflict with a series of unique and extremely advanced mecha mobile suits known as "Gundams".

It is directed by Seiji Mizushima and written by Yōsuke Kuroda, and features character designs by Yun Kōga. The 25-episode season was officially announced by Sunrise during a 15-second trailer on June 2, 2007. The series aired on the Mainichi Broadcasting System, Tokyo Broadcasting System and its affiliated JNN stations from October 5, 2007 to March 29, 2008. The second season began on October 5, 2008 and concluded on March 29, 2009. A movie sequel, titled Mobile Suit Gundam 00 the Movie: A Wakening of the Trailblazer, premiered in Japan on September 18, 2010 and was released on DVD and Blu-ray on December 25, 2010, in Japan. Mobile Suit Gundam 00 is the first Gundam television series to be animated in widescreen and in high-definition.

A light novel series, Mobile Suit Gundam 00P was serialized in Dengeki Hobby and centers around the previous generation of Gundam Meisters. Like the anime, it was also divided into 2 seasons: First season is set 15 years before the anime series, while second season is set 10 years after season one. 00P features events that happened before the main story. It is penned by Tomohiro Chiba, with model conductions by Dengeki Hobby Magazine. The first volume of the sidestory was released in May 2008 by Dengeki Hobby. After the series ended, a sequel named Mobile Suit Gundam 00N was on serialization, taking place the same time as season one.

A manga sidestory entitled Mobile Suit Gundam 00F was serialized in Gundam Ace. Illustrated by Kōichi Tokita, this manga series focuses on Fereshte, an autonomous branch of Celestial Being that is also in possession of several previous generation Gundams. The series acts as a link for the main story to the 2 other sidestories and introduces the characters and mecha from the other publications. First volume to this title was released on March 26, 2008 by Kadokawa Comics. A sequel for 00F, called Mobile Suit Gundam 00I, was serialized in Gundam Ace after 00F. It is also illustrated by Kōichi Tokita and takes place in the same time as season two. It mainly focuses on Innovades, and few characters from 00F has appeared.

A graphic novel that features variations of existing mobile suits, Mobile Suit Gundam 00V, which was serialized in Hobby Japan, is told in the format of a mobile suit development history book published 20 years after the anime series, featuring photo guides of customized models. It centers around the Mobile Suit observer Robert Spacey and his encounters with the different mobile weapons in the Gundam 00 universe. A sequel entitled Mobile Suit Gundam 00V Senki has replaced 00V after its serialization ended. 00V's timeline happens between the end of season one and beginning of season two, and 00V Senki's timeline is after the ending of season two.