Captain John Percy Farrar, also known as Percy Farrar and as J. P. Farrar, was an English soldier and mountaineer. He was President of the Alpine Club from 1917 to 1919 and a member of the Mount Everest Committee. Farrar's obituary in The Times stated that he 'was known by repute to every one interested in mountaineering in England and on the Continent, and his personal friends at home and abroad were legion'.

The Alpine Club was founded in London on 22 December 1857 and is the world's first mountaineering club. The primary focus of the club is to support mountaineers who climb in the Alps and the Greater Ranges of the world's mountains.