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Top 10 Largest Cruise Ships in the World

The biggest cruise ships sailing today, ranked by gross tonnage, with their length, staterooms and passenger capacity.

Icon of the Seas248,663 GT 2

Star of the Seas248,663 GT 3

Legend of the Seas248,663 GT

Quick answer

Royal Caribbean's three Icon-class ships, Icon of the Seas, Star of the Seas and Legend of the Seas, tie as the largest cruise ships in the world at 248,663 gross tons each. Royal Caribbean's Utopia of the Seas is next at 236,473 gross tons, and nine of the ten largest cruise ships belong to Royal Caribbean.

How it's ranked: Gross tonnage, a measure of a ship's total internal volume, from Wikipedia's List of largest cruise ships (in service, as of June 2026). Ships with the same tonnage are listed by the year they entered service.

Photo: Corey Seeman / CC BY-SA 4.0 via Wikimedia Commons

Icon of the Seas

Royal Caribbean International · Icon class cruise ship · released 2024

248,663 GT

The ship that started the Icon class, tied for the largest in the world.

Icon of the Seas is a Icon class ship sailing for Royal Caribbean International, in service since 2024. It measures 248,663 gross tons and is 364.75 meters long, with 2,805 staterooms and room for 5,610 passengers at double occupancy and up to 7,600 in total.

Best forFirst-time cruisers who want the biggest ship afloat

Skip it ifYou want a quiet, small-ship trip

Source: en.wikipedia.org › List_of_largest_cruise_ships

Star of the Seas

Royal Caribbean International · Icon class cruise ship · released 2025

248,663 GT

Icon of the Seas' twin, tied for the largest.

Star of the Seas is a Icon class ship sailing for Royal Caribbean International, in service since 2025. It measures 248,663 gross tons and is 364.83 meters long, with 2,805 staterooms and room for 5,610 passengers at double occupancy and up to 7,600 in total.

Best forThe newest Icon-class experience

Skip it ifYou prefer smaller, port-intensive cruises

Source: en.wikipedia.org › List_of_largest_cruise_ships

Legend of the Seas

Royal Caribbean International · Icon class cruise ship · released 2026

248,663 GT

The third Icon-class ship, tied for the largest.

Legend of the Seas is a Icon class ship sailing for Royal Caribbean International, in service since 2026. It measures 248,663 gross tons and is 364.84 meters long, with 2,805 staterooms and room for 5,610 passengers at double occupancy and up to 7,600 in total.

Best forSailing on the newest giant ship

Skip it ifYou want a proven ship with long reviews

Source: en.wikipedia.org › List_of_largest_cruise_ships

Utopia of the Seas

Royal Caribbean International · Oasis class cruise ship · released 2024

236,473 GT

The largest Oasis-class ship.

Utopia of the Seas is a Oasis class ship sailing for Royal Caribbean International, in service since 2024. It measures 236,473 gross tons and is 361.12 meters long, with 2,834 staterooms and room for 5,668 passengers at double occupancy.

Best forShort getaway cruises on a giant ship

Skip it ifYou want the very newest design

Source: en.wikipedia.org › List_of_largest_cruise_ships

Wonder of the Seas

Royal Caribbean International · Oasis class cruise ship · released 2022

235,600 GT

The Oasis-class ship that entered service in 2022.

Wonder of the Seas is a Oasis class ship sailing for Royal Caribbean International, in service since 2022. It measures 235,600 gross tons and is 362.04 meters long, with 2,867 staterooms and room for 5,734 passengers at double occupancy and up to 6,988 in total.

Best forFamilies who want endless onboard options

Skip it ifYou dislike crowds

Source: en.wikipedia.org › List_of_largest_cruise_ships

Symphony of the Seas

Royal Caribbean International · Oasis class cruise ship · released 2018

228,081 GT

An Oasis-class ship in service since 2018.

Symphony of the Seas is a Oasis class ship sailing for Royal Caribbean International, in service since 2018. It measures 228,081 gross tons and is 361.011 meters long, with 2,759 staterooms and room for 5,518 passengers at double occupancy and up to 6,680 in total.

Best forOasis-class fun with a long track record

Skip it ifYou want the newest ship

Source: en.wikipedia.org › List_of_largest_cruise_ships

Harmony of the Seas

Royal Caribbean International · Oasis class cruise ship · released 2016

226,963 GT

The third Oasis-class ship.

Harmony of the Seas is a Oasis class ship sailing for Royal Caribbean International, in service since 2016. It measures 226,963 gross tons and is 362.12 meters long, with 2,747 staterooms and room for 5,494 passengers at double occupancy and up to 6,687 in total.

Best forA big ship with proven reviews

Skip it ifYou want a small ship

Source: en.wikipedia.org › List_of_largest_cruise_ships

Oasis of the Seas

Royal Caribbean International · Oasis class cruise ship · released 2009

226,838 GT

The ship that started the Oasis class in 2009.

Oasis of the Seas is a Oasis class ship sailing for Royal Caribbean International, in service since 2009. It measures 226,838 gross tons and is 360 meters long, with 2,742 staterooms and room for 5,484 passengers at double occupancy and up to 6,771 in total.

Best forThe original mega-ship design

Skip it ifYou want the newest features

Source: en.wikipedia.org › List_of_largest_cruise_ships

Allure of the Seas

Royal Caribbean International · Oasis class cruise ship · released 2010

226,637 GT

Oasis of the Seas' first sister ship.

Allure of the Seas is a Oasis class ship sailing for Royal Caribbean International, in service since 2010. It measures 226,637 gross tons and is 360 meters long, with 2,742 staterooms and room for 5,484 passengers at double occupancy and up to 6,780 in total.

Best forMega-ship cruising at a lower price than newer sisters

Skip it ifYou want the latest attractions

Source: en.wikipedia.org › List_of_largest_cruise_ships

MSC World America

MSC Cruises · World class cruise ship · released 2025

216,638 GT

The largest ship here not built for Royal Caribbean.

MSC World America is a World class ship sailing for MSC Cruises, in service since 2025. It measures 216,638 gross tons and is 333.3 meters long, with 2,626 staterooms and room for 5,231 passengers at double occupancy and up to 6,762 in total.

Best forA newer giant ship outside Royal Caribbean

Skip it ifYou only want to sail with Royal Caribbean

Source: en.wikipedia.org › List_of_largest_cruise_ships

Questions people ask

What is the largest cruise ship in the world?

Royal Caribbean's Icon of the Seas, Star of the Seas and Legend of the Seas tie at 248,663 gross tons each.

How many people does the largest cruise ship carry?

The Icon-class ships carry 5,610 passengers at double occupancy and up to 7,600 in total, in 2,805 staterooms.

Which cruise line has the biggest ships?

Royal Caribbean International. Nine of the ten largest cruise ships in service sail for Royal Caribbean.

What is the largest cruise ship not run by Royal Caribbean?

MSC World America, at 216,638 gross tons.

What does gross tonnage mean?

It measures a ship's total internal volume, not its weight. It is the standard way to compare the size of cruise ships.

How we ranked

Gross tonnage, a measure of a ship's total internal volume, from Wikipedia's List of largest cruise ships (in service, as of June 2026). Ships with the same tonnage are listed by the year they entered service. Every number on this page comes from the source linked under each pick, and every photo shows the actual product. Brands can't pay to be on this list.

List source: en.wikipedia.org/wiki/List_of_largest_cruise_ships · Updated 2026-11-12