Jisaku Okada (岡田 次作, 1893 – June 4, 1942) was an Imperial Japanese Navy captain.^[1] During his career he was the commander of the seaplane tender Notoro and aircraft carrier Ryūjō. A couple of months before the start of the Second World War he was given the command of the Kaga. He was killed in action during the Battle of Midway when the ship was attacked by American dive bombers. Okada was posthumously promoted to Rear admiral.

Jisaku Okada
Native name	岡田 次作
Born	(1893-08-13)August 13, 1893 Kanazawa, Ishikawa, Empire of Japan
Died	June 4, 1942(1942-06-04) (aged 48) Pacific Ocean, near Midway Island
Allegiance	Empire of Japan
Service/branch	Imperial Japanese Navy
Years of service	1914–1942
Rank	Rear Admiral (posthumous)
Commands held	23rd Naval Air Group, Notoro, Ryūjō, Kaga
Battles/wars	World War II Pacific War Attack on Pearl Harbor Bombing of Darwin Battle of Midway †