Irving P. Krick (1906 – June 20, 1996) was an American meteorologist and inventor, the founding professor of Department of Meteorology at California Institute of Technology (1933–1948), one of the U.S. Air Force meteorologists who provided forecasts for the Normandy Landings in 1944, a controversial pioneer of long-term forecasting and cloud seeding, and "a brilliant American salesman" who in 1938 started the first private weather business in the United States.