Pietro Antonio Trezzini

Pietro Antonio Trezzini (Пётр Трезин; 1692 – after 1760) was a Swiss architect from the Trezzini family who worked primarily in St. Petersburg.

Trezzini collaborated with Mikhail Zemtsov on several major projects, including the Feodorovskaya Church in the new part of the Alexander Nevsky Lavra.

Trezzini's contributions to mid-18th century Russian architecture have been overshadowed by those of Bartolomeo Rastrelli.

Most of his buildings later gave way to grander Neoclassical edifices.

After completing the pentacupolar Transfiguration Church, Trezzini went on leave to Italy (1751) where he entered the service of the Habsburgs.

The Trinity Cathedral of Strelna Monastery was built to Trezzini's design under the supervision of his archrival, Bartolomeo Rastrelli