Costanzi

Costanzi is an Italian surname. It is most significantly associated with the history of Rome's music and theater scene through the Teatro Costanzi, an opera house in Rome named after its founder, the impresario Domenico Costanzi. The theatre opened in the late 19th century and became a prominent venue for operas and concerts; in time it came to be known as the Teatro dell'Opera di Roma, reflecting changes in naming while preserving its link to Costanzi's legacy.

In addition to the theatre connection, people bearing the Costanzi surname have lived in Italy and in diaspora communities around Europe and the Americas. The name is of Italian origin and is most common in central and northern Italy, though bearers can be found in many countries through migration.

Notable bearers include Domenico Costanzi, the impresario associated with the Rome theatre; other individuals with the surname have been active in various professions, including the arts and business, but remain less widely documented in standard reference sources.