SMALL DISADVANTAGED BUSINESS

SBA Office of Small Disadvantaged Business (SDB) Certification and Eligibility
The SDB program requires formal certification and includes provisions for price evaluation adjustment and evaluation factor where authorized by regulation.
http://www.sba.gov/sdb

SBA Office of 8(a) Business Development
The SBA's 8(a) BD Program, named for a section of the Small Business Act, is a business development program created to help small disadvantaged businesses compete in the American economy and access the federal procurement market.
http://www.sba.gov/8abd

Minority Business Development Agency (MBDA)
MBDA of the United States Department of Commerce is a federal agency specifically created to encourage the creation, growth, and expansion of minority-owned businesses. 
http://www.mbda.gov