John "Jack" Johnston (13 March 1923 – 14 October 2003) was a British econometrician. He spent most of his career at the University of Manchester, and later University of California, Irvine. Johnston is particularly known for authoring Econometric Methods (First edition 1964), one of the earliest and most popular textbooks in econometrics, the most recent editions being co-authored with . Johnston died in 2003 at UC Irvine Medical Center from complications of Parkinson's disease.