National Institute of Standards and Technology Reauthorization Act of 2018 This bill reauthorizes the National Institute of Standards and Technology (NIST) through FY2019. NIST shall carry out specified quantum information science and technology activities and convene a workshop to discuss the development of quantum information science. NIST shall: enhance and expand its guidance and assistance to federal agencies in helping them to effectively use its Framework for Improving Critical Infrastructure Cybersecurity; expand fundamental and applied research to address key questions related to the measurement of privacy, security, and vulnerability of software tools and communications networks; and implement the recommendations in the December 2017 Road Mapping Workshop Report on Overcoming Barriers to Adoption of Composites in Sustainable Infrastructure. NIST shall continue to: support the development of artificial intelligence and data science; and conduct research on the expanded connectivity, interoperability, and security of interconnected systems and other aspects of the Internet of things. The bill grants NIST the authority to appoint scientific, engineering, and professional personnel regardless of the civil service laws to carry out research and development that requires the services of personnel who are specially qualified.