HMS Albion

The Northern Parliament is one of the major nations in Azur Lane who represent the Soviet Navy during World War II. They are allied with the Azur Lane, who represent the Allies from World War II, comprising of the Eagle Union and Royal Navy as part of The Big Three, and the Dragon Empery and Iris Libre. The Northern Parliament was built upon collectivistic ideals, the source of her peoples' strength and solidarity.

The Dragon Empery is one of the major nations in Azur Lane and represent the Republic of China Navy during World War II and the People's Liberation Army Navy from the 1950s. As the name suggests, the nation's symbol is a Chinese dragon.

The Eagle Union is one of the major nations in Azur Lane who represent the United States Navy.They are are allied with the Azur Lane, who represent the Allies from World War II, comprising of the Royal Navy and Northern Parliament as part of The Big Three, and the Dragon Empery and Iris Libre.

The Royal Navy is one of the major nations in Azur Lane who represent the British Royal Navy from World War II. This nation includes ships from associated Commonwealth navies, like the HMAS Vampire and HMNZS Achilles. They are allied with the Azur Lane, who represent the Allies from World War II, comprising of the Eagle Union and Northern Parliament as part of The Big Three, and the Dragon Empery and Iris Libre.

The Iris Libre is one of the major nations in Azur Lane who represent the Free French Naval Forces during World War II, in contrast to the Vichya Dominion representing the French Navy under Vichy France. Both Iris Libre and Vichya Dominion were part of a larger, unified faction; Iris Orthodoxy before the national schism and the later global conflict between Azur Lane and Crimson Axis. They are allied with the Azur Lane, who represent the Allies from World War II, comprising of the Eagle Union, Royal Navy, and Northern Parliament as part of the The Big Three, as well as the Dragon Empery.

The Iron Blood is one of the major nations in Azur Lane and represent the Imperial German Navy prior to World War II and the Kriegsmarine during World War II. They are allied with the Crimson Axis, who represent the Axis powers from World War II, comprising of the Sakura Empire, Sardegna Empire, and Vichya Dominion.

The Sakura Empire is one of the major nations in Azur Lane who represent the Japanese Navy from World War II. They are allied with the Crimson Axis, who represent the Axis powers from World War II, comprising of the Sardegna Empire, Iron Blood, and Vichya Dominion.

The Sardegna Empire is one of the major nations in Azur Lane who represent the Regia Marina during World War II. They are allied with the Crimson Axis, who represent the Axis powers from World War II, comprising of the Iron Blood, Sakura Empire, and Vichya Dominion.

The Vichya Dominion is one of the major nations in Azur Lane who represent the French Navy under the occupation of Vichy France during World War II, in contrast to the Iris Libre representing the Free French Naval Forces under Free France. The abbreviation MN stands for Marine Nationale, literally "national navy". Both Iris Libre and Vichiya Dominion were part of a larger, unified faction; Iris Orthodoxy before the national schism and the global conflict between Azur Lane and Crimson Axis. They are are allied with the Crimson Axis, who represent the Axis powers from World War II, comprising of the Sardegna Empire, Sakura Empire, and Iron Blood.

Tempesta is a pirate nation in Azur Lane whose ships and weapons are themed around the Golden Age of Piracy. Ships in this nation are most likely neutral and do not ally themselves with either the Azur Lane or Crimson Axis. Tempesta has different divisions, each of which houses different Tempesta ships. Divisions: Star Wayfinder and Nebula Guardian.

META is a mysterious nation of unknown alliance in Azur Lane whose members are altered counterparts of the original shipgirls. META has different divisions, each of which houses different META ships. The significance of these divisions is unknown. The overall design for each META shipgirl adheres to a similar, almost uniform theme, consisting entirely of a red-gray-black color scheme that fits their war-scarred appearance.

Leviathans and X are beings from another dimension that attacked humanity in a different timeline. To the KAN-SEN. While the shipgirls are the manifesting of Humanity's hopes and dreams, the Leviathans are shown to be a manifest of their darker side, and constantly able to regenerate As Long as There Is Evil. A notable aversion as the story progresses. Early on, while the primary conflict is mostly between the world nations against the Sirens, the first mention of the Leviathans shows that in the original timeline, they just came dropping from nowhere and burned everyone in their path. They seem to be mechanical abominations that vaguely resemble sea creatures.

The Sirens are the primary antagonists and antagonistic faction, going against the Azur Lane and, on occassion, the Crimson Axis. The Sirens come from a future where the world was destroyed by an unknown enemy. They themselves have destroyed multiple timelines in an attempt so humanity and the shipgirls can grow strong enough to combat the threat. "Antiochus" is Anti-X, with the unknown enemy simply called X. Antiochus (ANTI-X): A title often mentioned by the Ashes.