List of naval and land-based operations in the Pacific Theater during World War II

List of codenames of naval and land based operations in the Pacific Theater during World War II including Japan, Oceania, and the Pacific Rim.

Axis

 * A-Go (1944) 🇯🇵 &mdash; Japanese plan to engage and destroy the U.S. Fleet during the Saipan landings
 * AL (1942) 🇯🇵 &mdash; Japanese invasion of the western Aleutians as a diversion from the attempted invasion of Midway Island
 * AOB (1942) 🇯🇵 &mdash; Japanese seizure of Kiska Island
 * AQ (1942) 🇯🇵 &mdash; Japanese seizure of Attu Island
 * Ke-GO (1943) 🇯🇵 &mdash; Japanese evacuation of Kiska, Aleutians
 * I (1943) 🇯🇵 &mdash; major Japanese air offensive to halt Allied advances on New Guinea and Guadalcanal
 * FS (1944) 🇯🇵 &mdash; proposal to isolate Australia by capturing New Caledonia, Samoa and Fiji.
 * K-1 (1942) 🇯🇵 &mdash; Japanese reconnaissance and air-raid on Pearl Harbor
 * Ka (1942) 🇯🇵 &mdash; Japanese plan to destroy the U.S. Fleet and recapture Guadalcanal
 * Ke (1943) 🇯🇵 &mdash; Japanese evacuation of Guadalcanal
 * Ketsu-Go (Decisive) (1945) 🇯🇵 &mdash; Japanese plans to counter US led invasion of Japan
 * MI (1942) 🇯🇵 &mdash; attempted seizure of Midway Island
 * MO (1942) 🇯🇵 &mdash; aborted Japanese invasion of Port Moresby in New Guinea
 * RO (1943) 🇯🇵 &mdash; reinforcement of air forces at Rabaul
 * Sho-Go (1945) 🇯🇵 &mdash; Japanese naval reaction to US invasion of Leyte
 * SR (1942) 🇯🇵 &mdash; seizure of Lae and Salamaua in southeast New Guinea
 * TA (1944) 🇯🇵 &mdash; attempt to repulse US bridgehead on Bougainville Island
 * Tan No. 2 (1945) 🇯🇵 &mdash; long-range Kamikaze mission on Allied fleet anchorage at Ulithi atoll
 * TEN (1945) 🇯🇵 &mdash; air defence plan for Japan
 * Ten-Go (1945) 🇯🇵 &mdash; Japanese kikusui attacks and naval sortie to defend Okinawa.
 * Z (1941) 🇯🇵 &mdash; the Japanese attack on Pearl Harbor

Allies

 * Baus Au (1942) 🇺🇸 &mdash; plan to hide materiel in the Philippines before the fall for later use in guerilla warfare.
 * Cartwheel (1943-1944) 🇺🇸 🇦🇺 🇳🇿 &mdash; Allied thrusts in the South West Pacific Area, aimed at isolating the major Japanese base at Rabaul.
 * Chronicle (1943) 🇺🇸 &mdash; Allied landings at Woodlark Island and Kiriwina, New Guinea in support of Cartwheel.
 * Toenails (1943) 🇺🇸 &mdash; Allied landings at New Georgia.
 * Postern (1943) 🇦🇺 🇺🇸 &mdash; Allied assault on Lae, Papua New Guinea.
 * Goodtime (1943) 🇳🇿 &mdash; New Zealand landing at Treasury Islands.
 * Blissful (1943) 🇺🇸 &mdash; US landing at Choiseul Island.
 * Cherry Blossom (1943) 🇺🇸 &mdash; US landing at Bougainville Island.
 * Dexterity (1943-1944) 🇺🇸 &mdash; Allied landings at Arawe, Cape Gloucester and Saidor and the capture of Tuvulu aerodrome.
 * Cleanslate (1943) 🇺🇸 &mdash; US landings on the Russell Islands
 * Cottage (1943) 🇺🇸 🇨🇦 &mdash; US and Canadian operation to recapture Kiska in the Aleutians
 * Cyclone (1944) &mdash; US airborne landings on Noemfoor, Dutch New Guinea
 * Detachment (1945) 🇺🇸 &mdash; US invasion of Iwo Jima
 * Downfall (1945) &mdash; planned invasion of Japan
 * Olympic (planned for 1945, not executed) 🇺🇸 &mdash; first of two prongs of the invasion of Japan
 * Coronet (planned for 1946, not executed) 🇺🇸 🇬🇧 🇨🇦 🇦🇺 &mdash; second of two prongs of the invasion of Japan
 * Fall River (1942) &mdash; Allied reinforcement and airfield construction at Milne Bay, Papua New Guinea.
 * Ferdinand (1942) 🇦🇺 &mdash; coastwatchers on Japanese-occupied islands
 * Flintlock (1944) 🇺🇸 &mdash; US assault on Marshall Islands.
 * Catchpole (1944) 🇺🇸 &mdash; US invasion of Eniwetok
 * Hailstone (1944) &mdash; naval air attack on Truk
 * Forager (1944) 🇺🇸 &mdash; US assault on Marianas Islands.
 * Galvanic (1943) 🇺🇸 &mdash; US assault on Gilbert Islands.
 * Gratitude (1945) 🇺🇸 &mdash; US Navy raid into the South China Sea
 * Iceberg (1945) 🇺🇸 🇬🇧 🇦🇺 🇳🇿 &mdash; US invasion of Okinawa
 * Inmate (1945) 🇬🇧 🇳🇿 &mdash; British and New Zealand naval bombardment of Truk
 * Juneau (1945) 🇺🇸 &mdash; US minesweeping operations at Okinawa.
 * Lentil (1945) 🇬🇧 &mdash; air attack by British Pacific Fleet on Pangkalan Brandan, eastern Sumatra
 * Majestic (planned for 1945, not executed) &mdash; Planned Allied invasion of the Japanese Home Island of Kyushu. Scrapped in favour of Operation Olympic (under Operation Downfall)
 * Meridian (1945)🇬🇧 &mdash; air attack by British Pacific Fleet on Palembang
 * Oboe (1945) 🇦🇺 🇺🇸 &mdash; Allied assault on Borneo.
 * PM (1945) &mdash; removal of defensive minefield off Auckland, New Zealand
 * Sandcrab (1943) &mdash; US operation to recapture Attu in the Aleutians
 * Starvation (1945) 🇺🇸 &mdash; American aerial mining of Japanese ports and waterways.
 * Stalemate (1944) 🇺🇸 &mdash; US assault on Peleliu and Palau Islands
 * Vengeance (1943) 🇺🇸 &mdash; The assassination of Japanese Admiral Isoroku Yamamoto
 * Watchtower (1942) 🇺🇸 &mdash; U.S. invasion of Guadalcanal