National Nurses United (NNU) is a nursing labor union based in California.
Formed in 2009, National Nurses United union is comprised of several affiliate unions: the California Nurses Association-National Nurses Organizing Committee (CNA-NNOC), the Massachusetts Nurses Association (MNA) and the United American Nurses (UAN).
NNU claims to be “the largest union and professional association of registered nurses in U.S. history” with more than 175,000 members. However, in their 2021 federal financial filing, the union reported having 156,575 members.