Altsimmering Church, Parish church in Simmering, Vienna, Austria

Altsimmering Church (St. Laurenz) stands on a rise in the old centre of Simmering, at Kobelgasse near Simmeringer Hauptstraße. The present building was begun on 11 July 1746 to plans by Matthias Franz Gerl, who gave it its late-baroque form; the tower, a former defensive tower built into the facade, was given a new upper section in the early 19th century. Gravestones of the old hilltop cemetery remain beside and behind the church.

The site has been used for religious purposes for about 1000 years, as confirmed by archaeological discoveries beneath the ground. The earliest written record mentioning the location dates to 1267.

The church is dedicated to Saint Lawrence, and its high altar painting of the saint, created by Josef Hendel in 1819, was replaced in 1910 by a work painted by Heinrich Bauer junior in 1882. Since 1933 a war memorial for Simmering soldiers killed in World War I has stood against the church wall, and a plaque commemorating World War II victims was added after 1945.

The church is located at Kobelgasse in the Simmering district and can be reached easily by public transport. Visitors should check ahead for service times, as entry may be available during specific religious gatherings.

The tower of Altsimmering Church is a former defensive tower built into the church facade. The church itself was first documented in 1267 as a filial church of St. Stephen's and is dedicated to Saint Lawrence. Five bells hang in the tower, four forming the main peal; the smallest, the Michael's bell, is rung only as a death knell.