John Jeffrey (born 25 March 1959 in Kelso in the Scottish Borders) is a Scottish former international rugby union player. His nicknames are "The Great White Shark" and "JJ", the former widely thought to be because of his blonde "thatch of hair", though in a recent book called 'The Grudge' by Tom English, it is a nickname that was given to him because of his very white skin.
Richard Bath has described him as "one of the most galvanising sights in Five Nations rugby throughout the 1980s and early 1990s."
Invariably first to the breakdown point, first with the tackle, or first with an inspired counter, Jeffrey had the ability to score important tries, of which he scored 11, another Scottish record at the time, shared with back-row colleague Derek White. He was also a member of the British Lions on the tour to Australia in 1989.