The Type 7 30 cm howitzer (Japanese: 七式 三十 榴 弾 砲, romanized: Shichi-nenshiki sanjū-senchi ryūdanhō) was a howitzer used by the Imperial Japanese Army in the Second Sino-Japanese War, Soviet–Japanese border conflicts and during the Pacific Campaign in World War II.

The downside was that high-angle fire was harder to aim correctly so more howitzers would be needed to defend an area from attack.

However, if the area was constrained by geography like a port at the mouth of a river the navigation channels could be measured ahead of time and firing ranges calculated.

The Type 7s were typical built-up guns of the period, with rifled steel inner tubes and layers of external reinforcing hoops.

In February 1940, two Type 7 long-barreled howitzers were moved to the Kotō fortress in Manchuria to strengthen Japanese defenses in the event of a Soviet attack.

[7] In 1944, the 4th Independent Heavy Artillery Battalion with Type 7 short-barreled howitzers was ordered to the Philippines in anticipation of American landings.