Sadaaki Konishi (January 19, 1916 – April 30, 1949) was a lieutenant in the Imperial Japanese Army during the Second World War.

Konishi would withhold salt in order to give cramps to the internees, and cut off the food rations for all of the people who were held there as prisoners.

He went so far as to dump a truck load of fruit on the asphalt behind the camp, telling the prisoners that if they wanted any food, they would have to go to the ground and eat it.

The Japanese massacred some 1,500 men, women, and children in adjacent towns which they suspected of collaborating with the liberators.

[2][3] Detailed narratives, from documents, about his conduct as commander in Los Baños, his trial, his incarceration and execution, and the misinformation about his fate are available in Henderson, Bruce, 2015, Rescue at Los Baños: the most daring prison camp raid of World War II, New York: William Morrow, HarperCollins, 2015.