||Kong ‡; Sengoku ‡; Sakazuki
||Possibly the largest fleet in the world, they act as the police of the World Government, and have bases in all the four Blue Seas and throughout the Grand Line. They are commanded by the Fleet Admiral.
||5 Vice Admirals
||Active only when called upon
||A specialized fleet of the Marines, consisting of 10 warships under the command of 5 vice admirals. It is considered to be the Marines' ultimate military action, falling under their doctrine of "Absolute Justice". The 10 battleship lays waste to the target location mercilessly, utterly disregarding any civilians and comrades, and are willing to even to sink any of their own ships if necessary. Only those ranking of Admiral or higher may initiate the Buster Call, as well as grant those lower ranking the permission. Once the Golden Den Den Mushi is activated, 5 available vice admirals and 10 ships are gathered, and the summon cannot be rescinded.
||They were once one of the strongest forces in the East Blue, with 50 ships and 5,000 pirates to their name. However, they lost all their ships shortly after entering the Grand Line to the hands of Shichibukai Dracule Mihawk. It is unknown what has become of them after Monkey D. Luffy defeated their captain.
||This organization, which was once comprised of over 2,000 men and several ships, mainly dealt in bounty hunting and Underworld trading. The ultimate goal of Baroque Works was to be resolved in Operation Utopia, however several of their ships were destroyed by Portgas D. Ace, while the rest (after Crocodile's defeat) were captured by the Marines.
||Marshall D. Teach
||Saber of Xebec
||Originally a small crew of only 10 or so members, shortly after the Summit War of Marineford they swiftly took over the majority of Whitebeards territory, with Teach ascending to the ranks of Four Emperors. Now ruling over several islands, they have blossomed into a full fledged fleet capable of supervising them. Though the full size of the Blackbeard Pirates is unknown, they have at least ten ships to their name, with their division commanders are known as the Ten Titanic Captains (10人の巨漢船長 Jū-nin no Kyokan Senchō?).
||Integrated into Straw Hat Grand Fleet
||A large fleet in its own right, it has 8 ships and 1,000 members, it has been active long before the current storyline, with the former head, Don Chinjao, once being a rival to the hero Monkey D. Garp. This group appears to be based in the Kano Country, and have for generations been led by the Chinjao Family. They joined the Straw Hat Grand Fleet after their leaders were saved from enslavement as toys at the hands of the Donquixote Pirates.
|Yonta Maria Grand Fleet
||Integrated into Straw Hat Grand Fleet
||A massive fleet commanded by Orlumbus, comprised of 56 ships and 4,300 members which was originally based in the Standing Kingdom. In a similar manner as the Happo Navy, Orlumbus too was turned into a toy and was doomed to a life of enslavement, but was saved by the Straw Hats. Due to this incident, he swore himself and his fleet to Monkey D. Luffy.
||The Neo Marines were a non-canon radical organization led by the former Marine Admiral, Z, and was made up of a large fleet of ships. The ultimate goal of the Neo Marines was to be resolved with their plan, the Grand Reboot, however, in the end, it was thwarted by the Straw Hats. It is unknown what became of them after their defeat at the hands of the Straw Hat Pirates, and their leaders death at the hands of the Marines. They were the main antagonists of One Piece Film: Z.
||A large fleet comprised of dozens of ships, each shaped like a large Den Den Mushi. The fleet is unique, serving hybrid functions. It is used to transport the Germa Kingdom's army, Germa 66, in both its official national engagements and in its Underworld mercenary activities. When all the ships are assembled and their "shells" interlocked, they also form the "territory" of the ocean-going Germa Kingdom itself.
|Big Mom Pirates
||Queen Mama Chanter
||The Big Mom Pirates are in control of a massive fleet comprised of numerous flagships, as well many Tarte ships used as guard posts and scouts for their territories within Totto Land. Their fleet formerly included both the Fire Tank Pirates and Sun Pirates before they disassociated themselves from Linlin and her pirate crew. There were plans to acquire and incorporate Germa 66's fleet along with their scientific knowledge through what was ostensibly a political marriage to form an alliance between the Vinsmoke and Charlotte Families, but was in reality a plot by Linlin and her crew to assassinate the Vinsmokes and gain everything for herself. After their plot was foiled and revealed to all at the Tea Party, the alliance between the families is no longer active, preventing the addition to their fleet.