William Pfaff (December 1928 – April 30, 2015) was an American writer. He was an author and op-ed columnist for the International Herald Tribune. He also worked on The New York Review of Books.
Pfaff was born in Council Bluffs, Iowa. He was of German, English, and Irish ancestry. He studied at the University of Notre Dame. He was a Catholic and was married with two children.
Pfaff died from a heart attack caused by a fall on April 30, 2015 in Paris, France. He was 86.