Deanshanger (/ˈdiːnzˌhæŋər/) is a village and civil parish in West Northamptonshire, west-northwest of Milton Keynes.

In 2007 it was joined with the civil parish of Wicken to form Deanshanger ward, returning two councillors.

However, from the late 18th century the coming of the Grand Union Canal to the east made Deanshanger an agricultural industrial centre causing it to grow quickly.

This growth accelerated with the building of the London and Birmingham Railway in the first half of the 19th century which passed through the nearby villages of Wolverton, Bletchley and Roade.

After a fall out with Henry II in 1170 AD, Thomas Becket is said to have sought refuge in the Gilbertine Monastery in Deanshanger (or Dinneshangra as it was then known).

Becket is said to have looked towards Heaven, struck the ground with his staff, and immediately a fresh spring appeared.

Extensive remedial work was needed to reverse the harmful effects of the previous industrial use of the site there are still signs of the red stained oxide all around the village.

In December 2015, The Co-operative Food opened a store on the High Street, where The Fox & Hounds Public House was situated, previously planned to be a Morrisons.

On the edge of the village on the A422, is a golf and country club, a hotel, an Indian restaurant and a petrol and service station.

There are also bus services between MK and Deanshanger and Buckingham on Friday and Saturday nights, running from 19:00-1:00AM.

As Milton Keynes expanded through the 1970s and 80s, traffic counts increased sharply through the village and calls for a bypass grew.