Gaetano Koch (9 January 1849 – 14 May 1910) was an Italian architect.
Koch was born in Rome, where he made his name with several major works – Palazzo Koch, seat of the Banca d'Italia, and the two porticoed palazzi which form Piazza della Repubblica, and the central Piazza Vittorio.
His mark can also be seen in Rome's Palazzo Mengarini and Palazzo Margherita (the latter is now the American Embassy to Italy in Via Veneto). He collaborated with others in the design of the Monument to Vittorio Emanuele II.
- This page is a translation of its Italian equivalent.