This is a list of UNSC battlecruisers in service by the beginning of The Great War and after it.

Valiant-class

*UNSC Valiant (CBG-01) – Battlegroup Valiant, Home Fleet

*UNSC Zeus (CBG-02) – Battlegroup Zeus, 8th Fleet

*UNSC Poseidon (CBG-03) – Battlegroup Poseidon, 2nd Fleet (destroyed over Jericho VII, 2535)

*UNSC Galactica (CBG-04) – Battlegroup Hades, 3rd Fleet

*UNSC Everest (CBG-05) – Battlegroup Everest, 3rd Fleet (MIA as of April 2543)

*UNSC Dragon (CBG-06) – Battlegroup Dragon, 7th Fleet (destroyed by FLP bombers over Mamore, March 2511)

*UNSC Liberty (CBG-07) – Battlegroup Liberty, 13th Fleet (destroyed over Circinius IV by CAS-class Unwavering Loyalty, April 2526)

*UNSC The Songs of War (CBG-08) – Battlegroup Mount, 1st Fleet

*UNSC Wolfhound (CBG-09) – Battlegroup Wolfhound, 8th Fleet (destroyed over New Harmony, 2537)

*UNSC Gaia (CBG-10) – Battlegroup Gaia, 1st Fleet

*UNSC Augusta (CBG-11) –Battlegroup Augusta, 3rd Fleet

*UNSC Jean Bart (CBG-12) – Battlegroup Augusta, 3rd Fleet

*UNSC Indomitable (CBG-13) – Battlegroup Indomitable, 5th Fleet

*UNSC Heart of the Tiger (CBG-14) – Battlegroup Tiger, 16th Fleet (destroyed over Earth, 2552)

*UNSC Victory (CBG-15) – Battlegroup Victory, 12th Fleet

*UNSC The Long March (CBG-16) – Battlegroup March, 9th Fleet (destroyed over Paris IV, 2549)

*UNSC Gallant (CBG-17) – Battlegroup Gallant, 11th Fleet

*UNSC Argonaut (CBG-18) – Battlegroup Argonaut, 9th Fleet

*UNSC Yamato (CBG-19) – Battlegroup Yamato, 7th Fleet (destroyed over Sansar, 2542)

*UNSC Repulse (CBG-20) – Battlegroup Repulse, 5th Fleet

*UNSC The Tears of the Sun (CBG-21) – Battlegroup Sun, 15th Fleet

*UNSC Constellation (CBG-22) – Battlegroup Constellation, 4th Fleet

*UNSC Call to Arms (CBG-23) – Carrier Strike Group 13, 3rd Fleet

*UNSC Royal Sovereign (CBG-24) – Battlegroup McKinley, 4th Fleet

*UNSC Colossus (CBG-25) – Battlegroup Colossus, 2nd Fleet

*UNSC Heaven's Gate (CBG-26) – Battlegroup Gallant, 11th Fleet

*UNSC Hood (CBG-27) – Battlegroup Hood, 10th Fleet

Everest-class

*UNSC Everest II (CBG-28) – Battlegroup Everest, 5th Fleet

*UNSC Renown (CBG-29) – Battlegroup Renown, 5th Fleet

*UNSC Krakatoa (CBG-30) – Battlegroup Krakatoa, 6th Fleet

*UNSC Vesuvius (CBG-31) – Battlegroup Vesuvius, 16th Fleet

*UNSC Queensland (CBG-32) – Battlegroup Queensland, 14th Fleet

*UNSC Matterhorn (CBG-33) – Battlegroup Matterhorn, 10th Fleet

*UNSC McKinley (CBG-34) – Battlegroup McKinley, 4th Fleet

*UNSC Soldier of Fortune (CBG-35) – Battlegroup Fortune, 5th Fleet

*UNSC Bismarck (CBG-36) – Battlegroup Bismarck, 7th Fleet

*UNSC Tirpitz (CBG-37) – Battlegroup Tirpitz, 7th Fleet

*UNSC Achilles' Heels (CBG-38) – Carrier Strike Group 06, 3rd Fleet

*UNSC Fuji (CBG-39) – Carrier Strike Group 71, 3rd Fleet (destroyed over Chorus while escorting the fleet tender UNSC What a Relief; May 21st, 2558)

*UNSC St. Helens (CBG-40) – Battlegroup Helens, 6th Fleet

*UNSC Kilauea (CBG-41) – Battlegroup Kilauea, 9th Fleet

*UNSC Rainier (CBG-42) – Battlegroup Rainer, 1st Fleet

*UNSC Temple Mount (CBG-43) – Battlegroup Mount, 1st Fleet

*UNSC E Pluribus Unum (CBG-44) – Battlegroup Unum, 5th Fleet

*UNSC Will of the People (CBG-45) – Battlegroup Gaia, 1st Fleet

*UNSC King George V (CBG-46) – Battlegroup Hood, 10th Fleet

*UNSC Prince of Wales (CBG-47) – Battlegroup Hood, 10th Fleet

*UNSC Light of Dawn (CBG-48) – Battlegroup Iowa, 13th Fleet

*UNSC Freedom's Triumph (CBG-49) – Battlegroup Unum, 5th Fleet

*UNSC Embers of Summer (CBG-50) – Battlegroup Summer, 4th Fleet

*UNSC Kirov (CBG-51) – Battlegroup Kirov, 7th Fleet

*UNSC Invincible (CBG-52) – Battlegroup Invincible, 6th Fleet

*UNSC Hades (CBG-53) – Battlegroup Galactica, 3rd Fleet

*UNSC Coronado (CBG-54) – Battlegroup Coronado, 3rd Fleet

*UNSC Indomitable (CB-55) – Battlegroup Indomitable, 5th Fleet

*UNSC Hirohito (CB-56) – Battlegroup Hirohito, 15th Fleet

*UNSC Southern Melody (CB-57) – Battlegroup Melody, 2nd Fleet

*UNSC Camerone (CB-58) – Battlegroup Camerone, 6th Fleet

*UNSC Inexorable (CB-59) – Battlegroup Inexorable, 1st Fleet

*UNSC War Hammer (CB-60) – Battlegroup Hammer, 5th Fleet

I didn't really like the name super-heavy cruiser, so I changed it to battlecruiser, plus I like to think that the Valiant-class could be the UNSC equivalent to the CCS-class battlecruiser just not produced in heavy numbers. I also wanted to introduce the successor to the Valiant-class of battlecruisers, the Everest-class, originally known as the Coronado-class up until after Cole's Last Stand.

The UNSC's Everest-class battlecruisers have two Heavy MACs, 32 M2551 Onager Mini-MACs, 80 oversized VLS pods (capable of launching Archers, Rapiers, and Howlers), 4 tubes for Hyperion ISBMs, 6 tubes for Shiva nuclear missiles, 48 tubes for Harpoon anti-ship nuclear missiles, 80 naval guns, 500 railgun mounts, and a dependable CIWS suite.

The UNSC has paid no expense in the design and construction of these lethal warships.