Pfarrkirche Großhaselbach, Parish church in Großhaselbach, Austria.

Pfarrkirche Großhaselbach is a Romanesque single-nave church with a rectangular 13th-century choir, a Gothic south tower topped by a 1794 onion dome, and a late-Gothic net-ribbed vault added from the mid-15th century. A late-15th-century portal opens through the south wall, and the church is surrounded by a walled churchyard.

The core is a 13th-century Romanesque single-nave church with a rectangular choir. In the 14th century a northern side aisle and two chapels were added; after damage in the Hussite wars the nave was re-vaulted, a late Gothic choir built and the south tower erected. It was baroquified in 1741, renovated in 1909, 1924 and 1928, and restored inside in 1960 and outside in 1981.

The church is dedicated to St Martin of Tours, and its 1880 neo-Gothic high altar by Franz Oberhuber shows the saint flanked by Saints Peter and Paul. In the nave and tower hall, carved coat-of-arms gravestones commemorate the Strein family of Schwarzenau, including Gothart Strein (1538) and Wolfhart Strein (1562).

The church is located in Schwarzenau and can be reached by local roads from surrounding areas. The Franz-Josefs-Bahn railway connects the region to Vienna, making it possible to travel there by train and then continue locally.

In the tower hall and crossing hang heraldic gravestones of the Strein von Schwarzenau family: Gothart (1538), Wolfhart (1562) and, outside, Georg (1444). A sandstone slab with cherub heads commemorates Franz Steidler (1708).