The municipality of ROSARIO is a first class urban municipality in the province of Cavite, Philippines. It has an area of 8.2 square kilometers with a population of 73,663 as of the 2000 census making it one of the most densely populated city/municipality in Cavite. Geographically, Rosario is bounded in the north-northeast by Noveleta, in the south by Tanza and in the west-southwest by Manila Bay. It lies 30 km south of Manila, 20 km north of the provincial capital Trece Martirez City and 17 km south-southwest of Cavite City. It is accessible by land and water (sea) transportation.

Fishing is a major economic activity due to its rich fishing grounds particularly in Barangays WAWA, SAPA MUZON and LIGTONG. The predominant cottage industries related to fishing include SMOKED FISH (tinapa) PROCESSING, FISH DRYING (daing), FISH PASTE (bagoong) MAKING, FISH SAUCE (patis) MAKING AND CANNING.

The municipality of Rosario was originally a part of the Francisco de Malabon (now General Trias). Rosario was formerly called TEJERO from the Spanish word "tejer" (to weave) because weaving fish nets was then the main occupation of the women. Rosario was also called SALINAS ( Spanish word for "sal " or "salt") during the Philippine Revolution because salt making was an important industry of the town. The place was likewise called MARCELLA or MARCELLES due to its proximity to the sea ("mar" in Spanish). Rosario was, finally, named in honor of their patron saint Nuestra Señora Virgen del Rosario de Coracol (Our Lady of the Most Holy Rosary).

To date, the names given to the town are remembered from the streets and industries Rosario is known for. Marcella exist as one of the national roads of the town. Salinas is associated with the finest and famous smoked fish (TINAPANG SALINAS) currently being produced in this town. And Rosario as an agro-industrialized fishing village along the coastline of Manila bay populated by a productive, peace-loving and God-fearing people who devotely venerate their patron saint the Nuestra Señora del Rosario.