George F. Andreasen (February 16, 1934 – August 11, 1989), born in Fremont, Nebraska, was an American orthodontist and inventor.

Andreasen, most noted for his invention and patent of the Nitinol Wire, also known as Memory Wire or shape memory alloy, began his experimentation with the nickel-titanium (NiTi) alloys as early as 1969.

His idea for Nitinol came from an article he read in the United States Naval laboratory publication supplement in the Journal of American Orthodontics.

Over the course of the next seven years, Andreasen experimented with his formula until he reached his goal and was awarded U.S. Pat.

To this day, this is the highest earning patent fostered by the University of Iowa College of Orthodontics[citation needed].