Nau is a clothing company, founded in 2007 by Marmot founder Eric Reynolds and based in Portland, Oregon, United States.

[1] Nau also makes use of ethical Merino and other wools[2] within its products as well as other uniques such as recycled polyester, Tencel, Cocona synthetic down and ethically-sourced goose down[3] All employees of Nau are provided free public transport and carbon offsetting tokens purchased for corporate travel and product to customer deliveries.

As of 2014, these partners were People for BIkes, Ashoka, Breakthrough Institute, Mercy Corp[6] and EcoTrust.

Nau opened numerous retail stores across the United States (Portland, San Francisco, Chicago and others), but on May 2, 2008, Nau announced that it was ceasing operations,[7] primarily due to an inability to raise further capital.

[8] In October 2013, Horny Toad sold the Nau brand to Korean-based Black Yak for an undisclosed amount with plans to continue the growth of the business through online, wholesale and eventually its own retail channels.