St Mary's Church is in Halton, which was formerly a separate village, but is now part of the town of Runcorn, Cheshire, England.

It had been situated just below the castle walls, a plain, square building with a bellcote on its eastern gable.

Sir George Gilbert Scott was appointed as the architect, and the church was consecrated on 12 November 1852.

A stained glass window in the north aisle dating from about 1893 is by Henry Holiday and depicts Christ and the children.

A monument to Sir Richard Brooke dated 1889 by Douglas and Fordham consists of a tablet with a stylized cross in a foliage frame.