The following are the significant events that happened in the Philippines for the month of September. It is arranged by day and year. If there is a link provided, you may click on the link to read further information regarding the place or person involved in the event.
| Day | Year | Event |
| 1 | 1901 | Filipino members of the Philippine Commission were appointed. |
| 1 | 1907 | Birth of Gil J. Puyat, senate president from January 27, 1967 – January 18, 1972 |
| 2 | 1901 | Gregorio T. Velazquez was born in Calumpit, Bulacan. He was named National Scientist in 1982 for his studies in Philippine phycology. |
| 2 | 1945 | Surrender of General Yamashita in Kiangan, Ifugao Province |
| 2 | 1945 | Formal end of the war with Japan. |
| 3 | 1898 | La Independencia, the organ of the revolution, was founded by Antonio Luna. |
| 4 | 1884 | Spanish Penal Code made applicable in the Philippines. |
| 5 | 1976 | Inauguration of the Philippine International Convention Center |
| 6 | 1834 | The entire Philippines was opened to world trade. |
| 6 | 1916 | Francisco Arcellana was born in Manila. He was named National Artist for literature in 1990. |
| 7 | 1946 | Tayabas was renamed Quezon Province by virtue of Republic Act no. 14 |
| 7 | 2019 | Sto. Tomas municipality in Batangas Province becomes a city after voters voted yes in a plebiscite. |
| 8 | 1954 | Establishment of the Southeast Asia Treaty Organization (SEATO) in Manila. |
| 9 | 1878 | Birth of President Sergio Osmena in Cebu City. |
| 9 | 1884 | Quintin Babila Paredes was born in Bangued, Abra. He was speaker in 1933 and senate president from March 5, 1952 to April 17, 1952. |
| 10 | 1898 | Publication of the first American daily newspaper in Manila: The American Soldier. |
| 10 | 1971 | Qurino Province was created through Republic Act 6394 |
| 11 | 1917 | Birth of President Ferdinand Marcos in Sarrat, Ilocos Norte |
| 12 | 1896 | Execution of the 13 Cavite Martyrs from whom the the City of Trece Martires in Cavite got its name |
| 12 | 1913 | Gerardo de Leon was born in Manila. He was named National Artist in 1982 for cinema. |
| 12 | 2007 | Sandiganbayan renders decision finding Joseph Ejercito Estrada guilty of plunder beyond reasonable doubt. |
| 12 | 2013 | President Aquino signs Republic Act No. 10625 or Philippine Statistical Act of 2013 to merge all the agencies that deals with Philippine statistics. |
| 13 | 1903 | Birth of Amado Hernandez in Tondo, Manila. He was a National Artist for Literature |
| 13 | 1957 | Birth of President Bongbong Marcos |
| 14 | 1815 | End of the Galleon Trade between the Philippines and Mexico |
| 15 | 1898 | Opening of the Malolos Convention in Malolos City, Bulacan. |
| 16 | 1807 | The people of Piddig, Ilocos Norte rose in arms against the Spaniards in defense of their Basi. |
| 16 | 1907 | Geminiano T. De Ocampo was born in Malolos City, Bulacan. He was conferred National Scientist Award as an opthalmologist. |
| 16 | 1991 | Philippine Senate voted 12-11 to reject renewal of US Subic Naval Base treaty. |
| 17 | 1935 | The first national election was held in the Philippines to elect president and vice-president of the Commonwealth Government. |
| 17 | 1937 | Filipino women’s right of suffrage was legalized in the Philippines. |
| 17 | 1973 | Effectivity of Republic Act No. 6397 which provided for the creation of the Integrated Bar of the Philippines. |
| 18 | 1891 | The second novel of Jose rizal, El Filibusterismo, is printed in Ghent, Belgium. |
| 18 | 1904 | Birth of Tomas Cloma – Founder of PMI Colleges, Inc. |
| 19 | 1910 | Birth of former Senate President Arturo Tolentino |
| 20 | 1763 | Gabriela Silang was executed in Vigan City. |
| 21 | 1972 | President Ferdinand Marcos issued Presidential Decree 1081 placing the entire country under martial law. |
| 22 | 1762 | British fleet, numbering 13 ships, entered Manila Bay and demanded the Surrender of the city. |
| 23 | 1762 | British soldiers started attacking Manila. |
| 24 | 1894 | Birth of Jose Yulo in Bago City, Negros Occidental, Speaker of the National Assembly and Chief Justice of the Supreme Court |
| 24 | 1934 | Birth of Senator Edgardo Angara (senate president 1993 – 1995) |
| 25 | 1813 | Spanish King Ferdinand VII abolished the Galleon Trade between Manila and Acapulco, Mexico. |
| 26 | 1945 | Catanduanes declared a province by Commonwealth Act 687 |
| 26 | 2009 | Typhoon Ondoy swept over Metro Manila and nearby provinces bringing torrential rains that flooded wide areas, killing hundreds, and displacing millions of residents. Considered one of the worst calamities to happen in the Philippines. |
| 27 | 1865 | General Miguel Malvar was born in Santo Tomas, Batangas. |
| 28 | 1901 | Massacre of Balangiga, Eastern Samar whereby the Americans suffered their worst defeat at the hands of the Filipinos led by General Vicente Lukban. |
| 28 | 1910 | Birth of President Diosdado Macapagal in Lubao, Pampanga |
| 29 | 1898 | The declaration of Philippine Independence was ratified at the Malolos Convention. |
| 29 | 1904 | Birth of Juan Salcedo Jr. in Pasay City, Metro Manila. – He was named National Scientist in 1978. |
| 30 | 1931 | Dolores A. Ramirez was born in Calamba City, Laguna. She was named National Scientist in 1997 for her work in the field of genetics. |
RELATED: Philippine Historical Events in January, February, March, April, May, June, July, August, October, November, December
See also:
List of Philippine Provinces with a link to their profile and history
