St Mary Bourne is a village and civil parish in the Basingstoke and Deane district of Hampshire, England.

It lies on the valley of the Bourne Rivulet, a tributary of the River Test, 5 miles (8.0 km) northeast of Andover.

The ward includes Binley, and the hamlets of Swampton and Stoke further up the Bourne rivulet valley.

The business, which was founded in the 1950s by Malcolm Isaac, is Europe's largest provider of watercress and also grows and packages washed rocket, spinach and other salad greens.

It has thatched houses and in the south part of the village is the flint and stone church of St Peter.