Crowmarsh Gifford, commonly known as Crowmarsh, is a village in the civil parish of Crowmarsh, in the South Oxfordshire district, in the county of Oxfordshire, England. It is beside the River Thames opposite the market town of Wallingford, the two linked by Wallingford Bridge. Crowmarsh parish also includes the hamlet of Newnham Murren, which is now merged with the village; the hamlet of Mongewell, and the village of North Stoke 2 miles (3.2 km) to the south.

Jethro Tull was an English agriculturist from Berkshire who helped to bring about the British Agricultural Revolution of the 18th century. He perfected a horse-drawn seed drill in 1701 that economically sowed the seeds in neat rows, and later developed a horse-drawn hoe. Tull's methods were adopted by many landowners and helped to provide the basis for modern agriculture.