The first Far Eastern Championship Games, called "the first Oriental Olympic Games," are held at the Carnival grounds (later the site of the Rizal Memorial Sports Stadium) in Malate, 3–7 February, with participants from the US Philippine Islands, China, Japan, the British East Indies (Malaya), Thailand, and British Hong Kong.
1919 - United States military Camp Nichols established near city.
1920 - Ramón Fernández becomes mayor.
1923 - The Peking Council, the Tokyo Council, and the Manila Council, the first Boy Scouts of America Councils in Asia, are organised. (The huge 1973 Golden Jubilee Jamboree of the Boy Scouts of the Philippines would be dated from this year.)
1924 - Miguel Romuáldez becomes mayor.
1926 - Legislative Building inaugurated in Ermita.
1927 - Tomás Earnshaw becomes mayor.
1928 - The Institute of Accountancy, which later became Far Eastern University, is founded in Sampaloc by Nicanor Reyes et al.
Dissolution of the Philippine Commonwealth Army's general headquarters and camp base in the city's capital was until the occupied by the Japanese Imperial forces.
1942
Japanese occupation begins.
León G. Guinto, Sr. becomes mayor.
The general headquarters and military camp base of the Philippine Commonwealth Army was stationed are actively moved in the province.
3 February - 3 March: Battle of Manila (1945); Japanese defeated.
Juan L. Nolasco becomes mayor.
The re-established of the general headquarters and military camp base of the Philippine Commonwealth Army included Philippine Constabulary was turns back are station's re-active in the city's capital after liberation.
1946 - City becomes part of the newly proclaimed Republic of the Philippines.
1947 - Republic Theatre opens.
1948
Capital of the Philippines relocated from Manila to Quezon City.
