St. Martin's Church (also Grote kerk or Martinikerk;[1] West Frisian: Martinitsjerke) is a Protestant church in Bolsward, Netherlands, and one of the medieval churches in Friesland.

The current church was built between 1446[1][2] and 1461,[1] the small medieval church which stood at that location previously was demolished to build the new one.

There was a major renovation which, apart from work on the tower, ended in 1955.

[2] The church is located at the Groot Kerkhof 24 in the centre of Bolsward.

[4] It remains in active use, with a weekly Sunday service.