Lacson is a Filipino surname with deep historical roots originating in the provinces of Iloilo and Negros Occidental, and with branches extending to Cavite and Pampanga. They are a prominent family involved in business, politics, real estate, and agriculture. The surname "Lacson" is a transliteration of Spanish orthography from the Chinese-Spanish name "la̍k-sun." Derived from the Hokkien language, it combines 六 (la̍k, meaning "sixth," possibly indicating birth order) and 孫 (sūn, meaning "grandchild") which can also be spelled as Laxon and Laczon by the Spaniards.
Notable people with the surname include:
- Aniceto Lacson (1857–1931), Filipino revolutionary general, sugar farmer, and businessman in the Philippines
- Arsenio Lacson (1911–1962), Filipino journalist and politician, nephew of Gen. Aniceto Lacson, Mayor of Manila (1952–1962)
- Ignacio Lacson Arroyo Sr. (1915–1999), Filipino politician, grandson of Gen. Aniceto Lacson, father of First Gentleman Mike Arroyo, and Iggy Arroyo
- Soledad Lacson-Locsin (1905–1995), Filipina author, translated Jose Rizal's Noli Me Tangere to the English language, sister of Mayor Arsenio Lacson
- Rose Lacson (1948), Filipina-Australian socialite, granddaughter of Gen. Aniceto Lacson, niece of Mayor Arsenio Lacson
- Isaac Lacson (1889–1964), Filipino politician, son of Gen. Aniceto Lacson, Governor of Negros Occidental (1931–1934), representative of the 8th senatorial district
- Rafael B. Lacson (1896-1979), Filipino politician, son of Don Mariano Lacson, Mayor of Talisay City (1938-1941), Governor of Negros Occidental (1946–1951)
- Daniel Lacson Jr. (1947-2024), Filipino politician, Governor of Negros Occidental during the Fourth Republic (1986–1987), and Fifth Republic (1988–1992)
- Eugenio Jose Lacson (born 1959), Filipino politician, current Governor of Negros Occidental
- Aurelio Lacson Locsin Sr. (1896–1974), Filipino politician, Mayor of Bacolod City, Negros Occidental (1946)
- Jose Carlos "Kako" Lacson (1942), Filipino politician, Mayor of Talisay City (1972-1980), Congressman of the 3rd District of Negros Occidental (1987–1998; 2001–2010)
- Alex Lacson (1965), Filipino author, reform advocate, lawyer, and Senatorial candidate
- Rosendo L. Lacson (1854-1926), Filipino Politician, brother of Gen. Aniceto Lacson, signatory of the Acta de Capitulacion during the Negros Revolution, first Mayor of Talisay City during the Negros Republic (1898-1900)
- Juan Lacson, Filipino Politician, Mayor of Talisay City, Negros Occidental (1906-1911)
- Daniel G. Lacson Sr., Filipino Politician, Mayor of Talisay City, Negros Occidental (1945-1947)
- Felipe B. Lacson, Filipino Politician, Mayor of Talisay City, Negros Occidental (1947-1955)
- David Lacson (1975–2021), Filipino politician, Mayor of E.B Magalona, Negros Occidental
- John B. Lacson (1898–1992), Filipino sea captain and academician, founder of John B. Lacson Foundation Maritime University
- Panfilo Lacson (1948), Filipino Senator, former Director-General of the Philippine National Police
- Dominador Lacson Lugtu, Filipino architect, principal designer who built the Araneta Coliseum
- Agustin Lacson, Filipino politician, Gobernadorcillo of San Fernando, Pampanga (1854–1855)
- Cosme Lacson, Filipino politician, Gobernadorcillo of San Fernando, Pampanga (1856–1857)
- Manuel S. Lacson, Filipino politician, Gobernadorcillo of Magalang, Pampanga (1868)
- Anacleto S. Lacson, Filipino politician, Gobernardorcillo of Magalang, Pampanga (1871–1873)
- Aniceto S. Lacson, Filipino politician, Gobernardorcillo of Magalang, Pampanga (1891–1893)
- Daniel O. Lacson, Filipino politician, Alcalde Mayor of Magalang, Pampanga (1899–1901)
- Daniel T. Lacson Sr., Filipino politician, Mayor of Magalang, Pampanga (1968–1986)
- Daniel L. Lacson, Jr., Filipino Politician, Mayor of Magalang, Pampanga (1988–1998)
- Maria Lourdes P. Lacson, Filipina politician, current and first female Mayor of Magalang, Pampanga
- Benjamin Lacson, Filipino politician, Mayor of Concepcion, Tarlac (2001–2004)
- Andres Lacson (1976), Filipino politician, Mayor of Concepcion, Tarlac, and vice chairman of Aksyon Demokratiko (2013–2022)