Finstock is a village and civil parish about 2 miles (3 km) south of Charlbury in Oxfordshire, England. The parish is bounded to the northeast by the River Evenlode, to the southeast partly by the course of Akeman Street Roman road, and on other sides by field boundaries. The 2011 Census recorded the parish's population as 797.
For most of its history Finstock was a township of the ancient parish of Charlbury. Finstock became a separate civil parish in the late 19th century.
In the early 16th century the manor of Charlbury and its land, including Finstock, was held by Sir Thomas White (1492-1567), a London tailor who founded St John's College, Oxford, in 1555. The manor was then included in the college's endowment. As the college lands were owned by an absentee landlord, the land was leased to many people including the Lee family of Ditchley Park from 1592 to 1776. The college then resumed direct control until 1857, when the lordship of the manor passed to Francis Spencer, 2nd Lord Churchill of Wychwood, the owner of Cornbury Park. It remains in the possession of Cornbury Park today although most of the manorial rights have lapsed and much of the village of Finstock is now freehold.