Japanese Mitsubishi Ki-21-I bombers raid Chongqing on the Yangtze river

The bombing of Chongqing from 18 February 1938 to 19 December 1944, was a series of massive terror bombing operations authorized by the Empire of Japan's Imperial General Headquarters and conducted by the Imperial Japanese Army Air Service (IJAAF) and Imperial Japanese Navy Air Service (IJNAF). Resistance was put up by the Chinese Air Force and the National Revolutionary Army's anti-aircraft artillery units in defense of the provisional wartime capital of Chongqing and other targets in Sichuan.

According to incomplete statistics, a total of 268 air raids were conducted against Chongqing, involving anywhere from a few dozen to over 150 bombers per raid.