All Saints' Church, Runcorn is a grade-II*-listed parish church that stands on the south bank of the River Mersey, overlooking Runcorn Gap. Designed by Anthony Salvin, it was built in 1847–49; Hartwell and co-authors in the Buildings of England series describe it as "more generous and rounded than many of Salvin's other later churches." The first church on the site is said to have been founded by Ethelfleda in 915, when she built a castle nearby. The present building replaced a medieval church of around 1250.
The church is built in local sandstone in Early English style with a steeple at the southwest corner, consisting of a square tower with an octagonal spire rising to 161 feet (49 m), which Hartwell and co-authors describe as "high" and "graceful." Some of the furniture in the church was moved from the previous building, as were some of the memorials, the majority of which are to members of the Brooke family from nearby Norton Priory. A former hearse house in the churchyard dates from about 1833.