Teatro comunale, Municipal theater in Cagli, Italy.

The Teatro Comunale is a 19th-century theatre in Cagli with three tiers of boxes and a gallery. Its main front, topped by a heavy cornice on brackets, uses rusticated stonework to fit into the street. Inside, the foyer has a cross-vaulted ceiling on four marbled columns, and Alessandro Venanzi decorated the auditorium and painted the grand curtain.

The Comunale replaced the Teatro delle Muse, inaugurated in 1754 on a design by Raimondo Compagnini. Construction started in 1871 on a more central site aligned with the Palazzo Pubblico, using Giovanni Santini's design as modified by Coriolano Monti and later by Lorenzo Priori. After buying Palazzo Benedetti, the project was adjusted and approved on 8 March 1869; decoration was entrusted to Alessandro Venanzi in 1872.

The blue vault painted by Alessandro Venanzi shows the seven liberal arts in hexagonal frames, with monochrome busts of figures devoted to the major arts in the pendentives. The second tier of boxes carries gilded roundels of Cagli's illustrious men, while sphinxes and Pegasus appear at the base of the pillars.

The theatre reopened to the public in 1999 after long restoration and safety-adaptation works, and the Istituzione Teatro Comunale di Cagli has run it since that year. Seating is arranged over three tiers of boxes plus a gallery, so check which level your ticket refers to. The Arena del Fiume supplements the indoor hall for summer programming.

A wooden rosette in the center of the ceiling served two purposes: decoration and ventilation for smoke from the original oil lamps. This practical detail shows how early theater buildings combined form and function.