William Edwin Ricker, OC FRSC (August 11, 1908 – September 8, 2001) was a Canadian entomologist and important founder of fisheries science. He is best known for the Ricker model,[1] which he developed in his studies of stock and recruitment in fisheries. The model can be used to predict the number of fish that will be present in a fishery.[2][3] He also had an international standing as an entomologist and a scientific editor. He published 296 papers and books, 238 translations, and 148 scientific or literary manuscripts.[4] His 1958 publication, "Handbook of computation for biological statistics of fish populations" and later updates were the standard books on the subject for decades.