Amadeo, officially the Municipality of Amadeo (), is a municipality in the province of Cavite, Philippines. According to the , it has a population of people.
The town got its name after King Amadeo I of Spain, the only Spanish king from the Italian House of Savoy. The town was previously known as Masilao (from Tagalog masilaw, "dazzling"), referenced to the glaring red flowers of the dapdap plant (Erythrina variegata) common in the area.
Amadeo traces its origins to Masilaw, a barangay of Silang. It was established as an independent municipality on July 15, 1872, through the authority of Governor-General Rafael Izquierdo y Gutiérrez. The new town initially comprised eight barangays formerly under Silang: Halang, Pangil, Banaybanay, Bukal, Maitim, Minantok, Salaban, and Talon. During its first 21 years, revolutionaries referred to the town by the Tagalog name *Maypag-ibig* (âÂÂWith LoveâÂÂ), in line with a broader movement to replace colonial-era place names with indigenous ones.
On October 15, 1903, it was returned to Silang by virtue of Act No. 947, as the Provincial Executive was displeased of how Amadeo was governed. It regained its independent status in January 1915 under Cavite Governor Antero Soriano. Previously composed of 13 barrios, 12 additional barangays, all in the poblacion, were established in 1972 by virtue of Presidential Decree No. 86. In 1985, Minantok was divided into two barangays, Minantok Silangan and Minantok Kanluran, following a plebiscite.
On February 15, 1989, Mayor Jeremias Villanueva and his security man Virgilio Lascano were assassinated by three gunmen riding a vehicle in front of his rented townhouse in Las Piñas, Metro Manila. Four suspects, including a Manila policeman from Amadeo, were later captured in Parañaque a month later on March 16, and by the next day, the National Bureau of Investigation (NBI) confirmed that the assassination was ordered by Villanueva's political rival, former Mayor Reynaldo Bayot.
Amadeo is politically subdivided into 26 barangays, as indicated in the matrix below. Each barangay consists of puroks and some have sitios.
Currently, there are 12 barangays which are classified as urban.
In the 2024 census, the population of Amadeo was 44,190 people, with a density of .
Amadeo is renowned as the "Coffee Capital of the Philippines." Agriculture, especially coffee cultivation that started in the 1880s, plays a pivotal role in the town's economy. In 2022, Amadeo reported a revenue of .
Amadeo is best known for its Pahimis Festival, which showcases the town's coffee industry. It is usually held on the last weekend of February and its town fiesta is held on the last Sunday of April.