Matthew Winkler is an American journalist who is a co-founder and former editor-in-chief of Bloomberg News, part of Bloomberg L.P. He is also co-author of Bloomberg by Bloomberg and the author of The Bloomberg Way: A Guide for Reporters and Editors.

Bloomberg L.P. is a privately held financial, software, data, and media company headquartered in Midtown Manhattan, New York City. It was co-founded by Michael Bloomberg in 1981, with Thomas Secunda, Duncan MacMillan, Charles Zegar, and a 12% ownership investment by Bank of America through their brokerage subsidiary Merrill Lynch.