The Church of St Denys, Walmgate is a Grade I listed building in Walmgate, York, Yorkshire. It was built on the site of a Saxon church and possibly of a Roman temple (the earliest records date from ca. 1154). Inside some of the earliest stained glass in York can be found: the sculpted Norman doorway and 15th century heraldic roof are also noteworthy features. The figure of St Denys can be seen in the 15th century east window - fewer than 40 English churches are dedicated to this French saint.
The church was originally a lot larger than it is now, as part of the church subsided after the king's fishpool was drained; another part gave way shortly after as a sewer was being built nearby and the current main entrance is situated where a window used to be. Originally it also had a spire but, unfortunately, between the 17th and 18th century it was hit by a cannon shot and struck by lightning. The spire was only removed 20 years later after being partially blown down.