The Bombardment of Fort Stevens occurred in June 1942, in the American Theater and the Pacific Theater of World War II. The Imperial Japanese submarine I-25 fired on Fort Stevens, which defended the Oregon side of the Columbia River's Pacific entrance.

I-25 (イ-25) was a B1 type (I-15-class) submarine of the Imperial Japanese Navy that served in World War II, took part in the Attack on Pearl Harbor, and was the only Axis submarine to carry out aerial bombing on the continental United States in World War II, during the so-called Lookout Air Raids, and the shelling of Fort Stevens, both attacks occurring in the state of Oregon.