Upton is a hamlet in the parish of Dinton, in Buckinghamshire, England. It is located to the north of the main village, on the junction between the new road from Aylesbury to Thame, and the old road before it was rerouted.

The hamlet name is a common one in England, and means 'higher farm', referring in this case to the hamlet's location at the top of an adjacent hill to Dinton.

The hamlet is often confused with the village of Upton cum Chalvey, which is now in the unitary authority of Slough though used to be in Buckinghamshire. The latter name was altered in the Victorian period to allay confusion between the two places.