| Apollon Theatre | |
| Native Name: | Θέατρο Απόλλων |
| Location: | Patras |
| Address: | Othonos-Amalias Avenue 6 Patras |
| Location Country: | Greece |
| Coordinates: | 38.2466°N 21.7356°W |
| Architect: | Ernst Ziller |
| Floor Count: | 2 |
| Capacity: | 108 |
| Owner: | City of Patras |
| Map Type: | Greece Patras |
| Architectural Style: | Neoclassical |
| Building Type: | Opera house |
| Client: | Municipality of Patras |
| Completion Date: | 10 October 1872 |
| Inauguration Date: | 10 October 1872 |
| Website: | http://www.dipethepatras.gr |
For the theatre in Harlem, see the Apollo Theatre
The Apollon Theatre (Greek: θέατρο "Απόλλων Theatro Apollon) is a theatre in Patras, Greece. Designed by the famous German architect Ernst Ziller, it was completed in 1872. The Apollon is located east of Georgiou I Square, one of Patras' popular squares. The theatre is a micrograph of the La Scala in Milan and is the oldest existing enclosed theatre of the same era. The Apollon Theatre has been the main stage of the Patras Municipal and Regional Theatre since 1988, and can hold up to 300 people.
The Apollon Theatre began construction on February 11, 1871, and opened on October 10, 1872. The construction was paid for by various residents of Patras. The main erection committee included Theodor Hamburger (president), Dimitrios Patrinos, K. Lappas and A. Chrysanthis.
Other sponsors included the then-mayor of Patras, Georgios Roufos, Gustavos Clauss, Hamburger, Langouras, the Triantis Brothers, Panagiotis Brothers, father of Dimitrios Gounaris, Epameinondas Maximos, father of Dimitrios Maximos
The Apollon Theatre is one of only four neoclassic theatres that survive in Greece (the other three are the Malliaropouleio Theatre in Tripoli, which opened in 1910, the Apollo Theatre in Syros, opened in 1864 and the Piraeus Municipal Theatre in Piraeus, opened in 1895).