Christkönigskirche, Vienna, Parish church in Fünfhaus, Vienna, Austria.

Christkönigskirche is a relatively modest Roman Catholic church on the Schmelz, built as a memorial to Ignaz Seipel and Engelbert Dollfuß. Its interior is a rectangular hall with a stairway leading down to a crypt. The church was consecrated in 1934 and served as the parish church of Neufünfhaus until 2016.

Hildegard Burjan initiated the church in 1933 as a memorial to Ignaz Seipel, the former chancellor who died in 1932 and was born near the Schmelz site. Clemens Holzmeister was commissioned in May 1933, Engelbert Dollfuß laid the foundation stone on 30 July 1933, and Fritz Stockinger set the keystone on 17 September 1934. After Dollfuß was murdered in the July Putsch, the building committee added his memory, and the church was consecrated on 29 September 1934.

The church is also called Seipel-Dollfuß-Gedächtniskirche, recalling Ignaz Seipel and Engelbert Dollfuß, who laid the foundation stone on 30 July 1933. Since 1 January 2017 it has been a branch church of the parish Hildegard Burjan, formed by merging the parishes Neufünfhaus, Rudolfsheim and Schönbrunn-Vorpark.

The interior is a rectangular hall, with the stairway down to the crypt at one side; the crypt lies below the church floor. The church stands on the former Schmelz, on a square renamed Kanzlerplatz in 1934. Since 2017 it has been a filial church of the parish Hildegard Burjan, so service times follow that parish's schedule.

The church was planned as a memorial to Chancellor Ignaz Seipel, who was born near the Schmelz, and after Chancellor Engelbert Dollfuß was murdered in the July Putsch of 1934 the building committee added his name, making it the Seipel-Dollfuß memorial church. Dollfuß himself had laid the foundation stone on 30 July 1933.