Ezio Rizzardo AC FAA FTSE FRS (born 26 December 1943 in Pederobba, Italy) is a polymer chemist at the Australian research agency CSIRO.

[1] His research interests include the kinetics and mechanisms of radical polymerization, and their commercial application.

[2] Rizzardo is an acknowledged expert in chemical methods to control the polymer architecture produced by free radical polymerization.

[1] Rizzardo has received multiple awards from CSIRO and the Royal Australian Chemical Institute for his achievements, as well as the Centenary Medal (2003) and the Prime Minister's Prize for Science (2011).

Rizzardo quipped that he would not be holding his breath on the night the prizes were announced.