Dasmariñas (Tagalog: [dɐsmaˈɾiɲɐs]), officially the City of Dasmariñas (Filipino: Lungsod ng Dasmariñas), is a component city in the province of Cavite, Philippines. With a land area of 90.1 square kilometers (34.8 sq mi)  and a population of 744,511 people according to the 2024 census, it is the largest city both in terms of area and population in Cavite and the wealthiest local government unit in the province.

Being located just 10 kilometers (6.2 mi) from Imus and 30 kilometers (19 mi) south of Manila, the growing congestion and conurbation of the Manila Metropolitan area has led to its rapid development in the late 1900s. This growth is manifested by the influx of major shopping malls, hospitals, universities, banks, industrial parks, and the growing number of residential subdivisions accommodating its growing population.

Dasmariñas was named after Gómez Pérez Dasmariñas, the 7th Spanish governor-general of the Philippines who served from 1590 to 1593. After his death, his son Luis Pérez Dasmariñas became the governor-general from 1593 to 1596. Pérez Dasmariñas came from San Miguel das Negradas of Viveiro, in Galicia, Spain.

Dasmariñas literally means "from As Mariñas" (coastal region of Lugo combining the comarcas of A Mariña Occidental, A Mariña Central and A Mariña Oriental), coming itself from mariño ("of the coast, seaside or shore" in the Galician language, the native tongue from Viveiro Galicia, Spain), and this from mar ("sea").

In the 19th century, during the Spanish colonial period, Dasmariñas was originally called Tampus, meaning "end of the forest" in the local Tagalog language. It was formerly a barrio of Imus and part of a vast Recollect hacienda that supported the various missionary activities of the Recollects in the Philippines and Spain.

On April 9, 1864, a council composed of the Archbishop of Manila, the politico-military governor of Cavite, the Prior Provincial of the Augustinian Recollect Order, and the parish priest of Imus met to discuss the creation of a new town and parish to separate from Imus. At that time, there were only 643 inhabitants in Tampus. After thorough discussions, Rafaél de Echagüe, the Governor-General of the Philippines, approved the creation of the new town on May 12, 1864, with Don Juan Ramirez elected as the first town head, or gobernadorcillo.

The creation of the town was unique among other towns in Cavite. For the first time, a town was established not through a petition from the local populace and its officials, as was customary and legally required, but instead through the initiative of high-ranking church officials and the Cavite politico-military governor.

An ensemble of nipa houses from other barrios of the hacienda, such as Malinta, Nancaan, Salacay, Paliparan, Malagasang, and Salitran, was grouped and migrated into a reducción (reduction) in Tampus in 1866. Reducción originally referred to the religious and civic aspects of missionary activities but later came to mean the process of resettling and unifying a community, thus creating a newly organized town. For the Spanish missionaries and friars, this process was advantageous for evangelization and consolidating Spanish rule. The new town could be accessed through a well-constructed network of roads and bridges built by the Recollect Order's architects and engineers.