February 9, 1899
1899 treaty between the United Kingdom and Portugal
During the Philippine–American War at Santa Cruz, Laguna, Philippines
March 1899 battle of the Second Samoan Civil War
Bolivia-Brazil border war (1899-1903)
1899 battle between Philippine forces and the US
1899 battle during the Philippine–American War
Labor riot in Idaho, United States
1899 battle of the Philippine–American War
1899 German–Spanish Treaty
Battle fought in Iloilo in 1899 during the Philippine–American War