Native American Entrepreneurial Opportunity Act This bill provides statutory authority for the establishment of the Office of Native American Affairs within the Small Business Administration (SBA). The office must establish a working relationship with Indian tribes and Native Hawaiian organizations by targeting SBA programs relating to entrepreneurial development, contracting, and capital access to (1) establish or expand small businesses owned and controlled by individuals who are members of Indian tribes or Native Hawaiian organizations, and (2) promote economic development in Indian country.