Bjørn Lomborg is a Danish author and the president of the think tank Copenhagen Consensus Center. He is the former director of the Danish government's Environmental Assessment Institute (EAI) in Copenhagen. He became internationally known for his best-selling book The Skeptical Environmentalist (2001).

The Skeptical Environmentalist: Measuring the Real State of the World is a book by Danish author and statistician Bjørn Lomborg which focuses on the author's view of environmental economics and issues. It was first published in Danish in 1998 by Centrum, and in English by Cambridge University Press in 2001.