Stourbridge fair was an annual fair held on Stourbridge Common in Cambridge, England. At its peak it was the largest fair in Europe and was the inspiration for Bunyan's "Vanity Fair".
The fair was one of four important medieval fairs held in Cambridge: Garlic Fair, Reach Fair, Midsummer Fair and Stourbridge Fair.
In 1199, King John granted the Leper Chapel at Steresbrigge in Cambridge dispensation to hold a three-day fair to raise money to support the lepers. The first such fair was held in 1211 around the Feast of the Holy Cross (14 September) on the open land of Stourbridge Common alongside the River Cam.
The fair's location, with the river allowing barges to travel up the Cam from The Wash, and near an important road leading to Newmarket, meant that the fair was accessible to a large population. Despite its proximity to Cambridge, the charter prohibited anyone from imposing taxes on the commerce there.
During its history the fair was variously spelled "Stir-Bitch", "Stirbitch" and "Sturbridge", with its name derived from the "Steer Bridge" (i.e. a bridge for oxen), where the road to Newmarket crosses a small river that enters the Cam just to the east of the common (the name "Sture" or "Stour" now given to this river is a back-formation).
As the fair grew to become the largest in Europe the prosperity of the Leper Chapel was assured, with the position of a priest there among the most lucrative jobs in the Church of England. In the late thirteenth Century the leper colony closed, and the fair was handed over to the town of Cambridge.
As the annual fair became more successful still, the right to control it became the subject of a battle between the town of Cambridge and its well-established University until in 1589 Elizabeth I confirmed the right of the town to collect the fair's profit, but controversially granted the University the right to oversee the organisation of the fair, as well as controlling quality. The once flourishing chapel became merely the store for the stalls, and in the eighteenth century was even used as a pub.