Nau or NAU may refer to:
Nau is a clothing company, founded in 2007 by Marmot (company) founder Eric Reynolds and based in Portland, Oregon, United States.
'''Nau ''' is a river of Baden-Württemberg and Bavaria, Germany.
Nau is the only release by Nau, a Brazilian post-punk band founded in 1985 by writer Vange Leonel (vocals), former Zero member Alberto "Beto" Birger (bass), Zique (guitar) and Mauro Sanches (drums, percussion). It was released in 1987 via CBS Records International. The album was critically acclaimed and even got the attention of famous singer Cazuza, who became a fan of the band.
According to former guitarist Zique, by 1989 Nau was working on a second album. Eight tracks were recorded for it, but due to lack of promotion and the decline of appreciation of Brazilian rock during the late 1980s and the early 1990s, the album was scrapped and the group disbanded soon after; CBS would be also disestablished in the following year, since it was bought by Sony. Four of the tracks intended for the unproduced second album were available for streaming at the now-defunct official website for Zique.
"Nau" is the Portuguese word for carrack.