Ghost in the Shell: S.A.C. 2nd GIG is the second season of the Japanese anime series Ghost in the Shell: Stand Alone Complex, based on Masamune Shirow's Ghost in the Shell manga series. It premiered on 1 January 2004 in Japan on the anime communications satellite television network, Animax, on a pay-per-view basis. The series was later aired on the terrestrial Nippon TV from 12 April 2005. Animax also later aired the series across its other networks worldwide, including its English language networks in Southeast Asia and South Asia, and its other networks in Hong Kong, Taiwan, Latin America and several other regions. It was also later aired in the United States on Cartoon Network's Adult Swim block. Bandai Visual owns the DVD distribution rights in Japan while Manga Entertainment owns the distribution rights in North America and Europe.
The series has an associated short series of comedic shorts involving the Tachikoma called Tachikomatic Days, which was also part of its first season.