St Martin in the Bull Ring is a Church of England parish church in the city of Birmingham, West Midlands, England. It is the original parish church of Birmingham and stands between the Bull Ring Shopping Centre and the markets.

The church is a Grade II* listed building. The current rector is Jeremy Allcock.

The present Victorian church was built on the site of a 13th-century predecessor, which was documented in 1263. The church was enlarged in medieval times and the resulting structure consisted of a lofty nave and chancel, north and south aisles and a northwest tower with spire.

In 1690, the churchwardens "dressed the church in brick". All was cased in brick with the exception of the spire.

John Cheshire rebuilt 40 feet (12 metres) of the spire in 1781, which was strengthened by an iron spindle running up its centre for a length of 105 feet (32 metres). It was secured to the sidewalls at every ten feet (three metres) by braces. In 1801, several metres from the top of the spire were replaced after they were found to have decayed. The tops of the four pinnacles surrounding the main spire were also rebuilt. By 1808, the spire had been struck by lightning three times.

In 1853, the brick casing was removed from the tower by Philip Charles Hardwick, who added the open-air pulpit. The church also contained an organ, the reedwork of which had been done by John Snetzler. However, the pipes were found to be ineffective due to their proximity to the church roof and walls.

In 1875, John Thackray Bunce published a book, History of Old St. Martin's, Birmingham, illustrated with paintings by Allen Edward Everitt.

In 1873, the church was demolished and rebuilt by architect J. A. Chatwin, preserving the earlier tower and spire. During the demolition, medieval wall paintings and decorations were discovered in the chancel, including one showing the charity of St Martin dividing his cloak with a beggar. Two painted beams were also found behind the plaster ceiling.