Daniel Ammann (born 1963) is a Swiss investigative journalist and author. He was educated at University of Zurich, UC Berkeley and Fondation Post Universitaire Internationale in Paris. He holds an MA in Political Science, History and Constitutional Law.
Ammann is best known for his biography of Marc Rich, the controversial commodities trader and founder of Glencore who received a presidential pardon from U.S. President Bill Clinton. The King of Oil – The Secret Lives of Marc Rich became an international bestseller and was published in seven languages.
In 2010 Ammann was named Swiss Business Journalist of the Year. In 2007 he won the renowned Georg von Holtzbrinck Prize for Business Journalism. In 2006 he was awarded the Swiss Media Prize for Finance Journalism.