Zuikaku (Japanese: 瑞鶴, meaning "Auspicious Crane") was the second and last Shōkaku-class aircraft carrier built for the Imperial Japanese Navy (IJN) shortly before the beginning of the Pacific War. Zuikaku was one of the most modern Japanese aircraft carriers when commissioned, and saw successful action throughout numerous battles during the Pacific War.

Zuikaku started the war as part of Kidō Butai. Her aircraft struck airfields during the attack on Pearl Harbor that formally brought the United States into the war. She also participated in the Indian Ocean raid, where her dive bombers sank or helped to sink several major British warships. Zuikaku and her sister Shōkaku were detached from Kidō Butai to support Operation Mo, the invasion of Port Moresby, New Guinea, during which her torpedo bombers contributed to the sinking of the aircraft carrier USS Lexington at the Battle of the Coral Sea; however heavy airgroup losses and damage to Shōkaku resulted in both carriers missing the Battle of Midway. She and her sister fought US carriers at the Battle of the Eastern Solomons, and again at the Battle of the Santa Cruz Islands where she helped to sink the aircraft carrier USS Hornet. During the Battle of the Philippine Sea and Battle of Leyte Gulf, she was damaged by US carrier aircraft, being sunk in the latter engagement.

Zuikaku was one of six carriers to participate in the Pearl Harbor attack and was the last of the six to be sunk in the war (Akagi, Kaga, Hiryū, and Sōryū in the Battle of Midway; Shōkaku in the Battle of the Philippine Sea; and Zuikaku in the Battle of Leyte Gulf.)

A memorial for the fallen personnel of the Zuikaku is located at the grounds of Kashihara Shrine, located in the city of Kashihara, Nara Prefecture, Japan.