The history of the city of San Pedro, located in the province of Laguna in the Philippines, dates back to the colonial era. It was officially founded on January 18, 1725. By decree of the Spanish King, the settlement formerly known as "Tabuco" was separated from the neighboring town of Cabuyao and granted independent status. The city was originally named San Pedro de Tunasán—the first part in honor of its patron saint, Saint Peter the Apostle, and the second, "Tunasán," referring to the "tunas" medicinal plant that once grew in abundance along the shoreline.
A key factor in the growth of San Pedro was its geographical location. For centuries, the town was a large hacienda (estate) belonging first to the Augustinian Order and later to the Jesuits of the Colegio de San Jose. This shaped its agrarian character and led to long-term land disputes between tenants and owners. Its strategic proximity to Manila made it an important transit point and the "gateway to Laguna province."
The city's early economy was closely tied to natural resources. The primary sources of income for residents were agriculture, fishing in Laguna de Bay, duck raising, and fruit farming. San Pedro gained particular fame for the production of sampaguita flowers, which became one of its symbols. Over time, with increasing urbanization, traditional trades gave way to the city's development as a major residential suburb of the capital.