Casteldaccia (Sicilian: Castiddaccia) is a town of 11,628 inhabitants and comune near the Metropolitan City of Palermo, Sicily, southern Italy, founded by Marquis Longarini.

One hypothesis on the origin of its name is that it comes from the union of two words: castello (Italian for "castle") and accia (celery, a plant that used to grow abundantly in the place where now the village stands).

In the late 20th century, Casteldaccia had a chaotic urban development: real estate speculation has irreparably damaged the territory.

[4] In the 16th century, the territory was intensely cultivated with sugarcane, so a tower called Bellacera[5] was built to protect the plantations.

Other villas, some of which in Art Nouveau style, surrounded by large gardens, are located on the hill overlooking the railway station.