Jonah Barrington MBE (born 29 April 1941) is a retired Irish/English squash player, originally from Morwenstow, Cornwall, England.
A Cornish-born Irish squash player and attended Headfort School in County Meath and Cheltenham College, and spent two years at Trinity College Dublin.
Barrington won the British Open (which was considered to be the effective world championship event before the World Squash Championships began) six times between 1967 and 1973, and was known as "Mr. Squash". Barrington was the British national champion in 1980.
In 1982 Barrington co-authored the book Murder in the Squash Court: the Only Way to Win.
The six-time British Open champion coached Egyptian world no.1 and 2015 British Open champion Mohamed El Shorbagy. and Israeli squash player Daniel Poleshchuk.
Barrington is the father of professional squash player and commentator Joey Barrington.