C is a 2011 Japanese anime television series produced by Tatsunoko Production. The story follows Kimimaro Yoga, an economics student who is introduced to the alternate reality of the Financial District, where people bet their own futures in battles. Entres—the series' term for the fighters—can accumulate large quantities of money by winning but they will have their futures altered if they lose. As the story proceeds Kimimaro starts to perceive the effects of the Financial District's existence in the real world.

The anime was directed by Kenji Nakamura, who was given the opportunity to create a storyline for an original series. Nakamura was affected by the bankruptcy of Lehman Brothers—one of the key events of the financial crisis of 2007–08—and envisioned a story about economic battles. He was moved by stories he heard during the interviews he conducted with people related to the economics field, and the series became darker in tone during its development. Through macroeconomics jargon, the series addresses trust and the need to act to ensure a better future.

The series was broadcast in Japan on Fuji TV's Noitamina programming block between April 15 and June 24, 2011, before being released on DVD and Blu-Ray discs by Toho. It was simulcasted with a week's delay by Funimation Entertainment in the United States, by Siren Visual in Australia, and by Anime on Demand in the United Kingdom. The anime also aired in the United States on the Funimation Channel and on Pivot in 2013. Its home media distribution was handled by Funimation in the United States, by Siren Visual in Australia, and by MVM Entertainment in the United Kingdom.

C's premise and core concept have been praised by Western reviewers, who were nonetheless disappointed by the execution of the story and the development of the characters. One of the critics' main concerns was that the story was inconclusive and that some plot elements were not fully worked. Its art received mixed responses but was highly criticized for its use of 3D computer graphics, while the musical score was mainly praised. The series has also been highlighted both as a good action show and as a series that can arouse reflective discussions on economic philosophy.