Alte Pfarrkirche St. Johann Baptist, Filial church in Haidhausen, Munich, Germany

Alte Pfarrkirche St. Johann Baptist is a parish church and architectural monument located in the Haidhausen district of Munich. Its most striking feature is the western tower that rises prominently above the neighborhood rooflines, displaying traditional brick masonry and a distinctive profile against the sky.

First documented on 12 February 808, when the priest Erlaperht transferred the church and all his property to the church of the Virgin Mary in Freising under Bishop Atto. In 1315 the Konradinische Matrikel lists Haidhausen as a filial of Bogenhausen, with a Romanesque church whose lower tower storeys survive. A benefice followed in 1493, and around 1698–1700 the church was rebuilt as a single-nave hall.

The church's patron is John the Baptist, first named in the Sunderndorfer Matrikel of 1524. From the feast of John (24 June) to that of Saint James the Elder (25 July), Haidhausen celebrated the Johannesdreißiger; in 1619 Duke Maximilian I gave the church a relic of the Baptist, his right jawbone, obtained from the Benedictine abbey of Malmedy. In 1624 Count Tilly funded the Tilly monstrance.

The church stands at Kirchenstraße 39 in Haidhausen, east of Munich's centre. The tower's lower storey preserves parts of the Romanesque building, while the nave was rebuilt as a single-hall room between 1698 and 1700. The interior is entered from the street side; the main altar with its gilded lamb panel faces the visitor.

The church holds four life-size early Baroque sculptures of Western Church Fathers carved in 1630 by Christoph Angermair, court sculptor in Weilheim: Saints Ambrose and Augustine, Jerome and Pope Gregory I. They survive in the church to this day, alongside Renaissance panels of scenes from the life of John the Baptist painted by Thomas Zehetmair the Younger in 1623.