Antony John Williams is a British chemist and expert in the fields of both nuclear magnetic resonance (NMR) spectroscopy and cheminformatics at the United States Environmental Protection Agency.
He is the founder of the ChemSpider website that was purchased by the Royal Society of Chemistry in May 2009.
He is a science blogger, one of the hosts of the SciMobileApps wiki, a community-based wiki for Scientific Mobile Apps and an author.