1993
- Biology – Presented jointly to Paul Williams Jr. of the Oregon State Health Division and Kenneth W. Newel of the Liverpool School of Tropical Medicine, bold biological detectives, for their pioneering study, "Salmonella Excretion in Joy-Riding Pigs".
- Chemistry – Presented jointly to James Campbell and Gaines Campbell of Lookout Mountain, Tennessee, dedicated deliverers of fragrance, for inventing scent strips, the odious method by which perfume is applied to magazine pages.
- Consumer Engineering – Presented to Ron Popeil, incessant inventor and perpetual pitchman of late night television, for redefining the industrial revolution with such devices as the Veg-O-Matic, the Pocket Fisherman, Mr. Microphone, and the Inside-the-Shell Egg Scrambler.
- Economics – Presented to Ravi Batra of Southern Methodist University, shrewd economist and best-selling author of The Great Depression of 1990 (ISBN 978-0-440-20168-7) and Surviving the Great Depression of 1990, (ISBN 978-0-671-66324-7) for selling enough copies of his books to single-handedly prevent worldwide economic collapse.
- Literature – Presented to T. Morrison,E. Topol, R. Califf, F. Van de Werf, P. W. Armstrong, and their 972 co-authors, for publishing a medical research paper which has one hundred times as many authors as pages. The authors are from the following countries: Australia, Belgium, Canada, France, Germany, Ireland, Israel, Luxembourg, the Netherlands, New Zealand, Poland, Spain, Switzerland, the United Kingdom, and the United States.
- Mathematics – Presented to Robert W. Faid of Greenville, South Carolina, farsighted and faithful seer of statistics, for calculating the exact odds (710,609,175,188,282,000 to 1) that Mikhail Gorbachev is the Antichrist.
- Medicine – Presented to James F. Nolan, Thomas J. Stillwell, and John P. Sands, Jr., medical men of mercy, for their painstaking research report, "Acute Management of the Zipper-Entrapped Penis".
- Peace – The Pepsi-Cola Company of the Philippines, for sponsoring a contest to create a millionaire, and then announcing the wrong winning number, thereby inciting and uniting 800,000 riotously expectant winners, and bringing many warring factions together for the first time in their nation's history.
- Physics – Presented to Corentin Louis Kervran of France, ardent admirer of alchemy, for his conclusion that the calcium in chickens' eggshells is created by a process of cold fusion.
- Psychology – Presented jointly to John Edward Mack of Harvard Medical School and David M. Jacobs of Temple University, for their conclusion that people who believe they were kidnapped by aliens from outer space, probably were—and especially for their conclusion, "the focus of the abduction is the production of children".
- Visionary Technology – Presented jointly to Jay Schiffman of Farmington Hills, Michigan, crack inventor of AutoVision, an image projection device that makes it possible to drive a car and watch television at the same time, and to the Michigan State Legislature, for making it legal to do so.
Read more about this topic: List Of Ig Nobel Prize Winners