The Warner T. Koiter Medal was established in 1996 by the American Society of Mechanical Engineers. It is awarded in recognition of distinguished work in the field of solid mechanics.
The award was funded by the Technical University of Delft in the honor of Warner T. Koiter, who was a professor at the university from 1949 till 1979. Koiter's most influential work dealt with the non-linear stability of structures.
The recipient is given an honorarium and a bronze medal.