St. Trinitatis (Holy Trinity), or colloquially Trinitatiskirche, is a Lutheran church in Wolfenbüttel, Lower Saxony, Germany, consecrated in 1719.

Designed by Hermann Korb, it is a rare Baroque church in Lower Saxony.

[2] A church was designed by Johann Balthasar Lauterbach, the duchy's master builder.

He used the foundations of the gate[3][4] and designed a domed hall in Baroque style, with a highly decorative facade framed by two stone towers that were not taller than the building; the facade, with a pediment, recalled that of Salzdahlum Palace.

Hermann Korb, his successor, was finally able to finish the plans by using wood instead of stone.