A self-contained vessel, usually either sea- or spacefaring, that carries everyone and everything needed to start a self-sufficient colony.
- Crops up in XXXenophile. In "Family Reunion", salvalger Otis discovers the U.N.S.S. Rojong, the first colonization slowship from Old Terra, presumed lost in space. The bio-pods are intact and should contain all of the 'lost' animals: elephants, fireflies, anteaters, unicorns....
- Nero: Nero builds one in the album "The Ark Of Nero", but it turns out it was It Was All A Dream.
- Orson Scott Card's Lovelock takes place aboard the Mayflower Ark, an enormous starship carrying the population of a small town to start a colony on a new planet. Despite the name, this is not The Ark, as there's no cataclysm on Earth; they seem to be doing it For Science! as much as any other reason.
- In Ender's Game, the First Invasion of Earth by the buggers was just an exploratory fleet. The Second Invasion included a Colony Ship carrying a bugger queen, which Mazer Rackham destroyed, collapsing their Hive Mind. After the war, humanity sends out its own Colony Ships to colonize the empty bugger worlds. Ender and Valentine leave Earth on one such ship.
- Jason Worthing of The Worthing Saga is the captain of the Sleeper Ship variant. Unfortunately, an encounter with Space Pirates damages the sleep chambers in such a way as to afflict the Human Popsicles with severe amnesia, so he winds up with a colony full of adult-sized toddlers.
- One book in the Jedi Apprentice series (in a crossover with Jedi Quest) has Obi-Wan and Anakin investigate one of these, called the BioCruiser, which recruits people from environmentally devastated planets. It's actually part of an elaborate scheme to rob them all.
- Time Enough for Love. In the Back Story of the chapter "The Tale of the Adopted Daughter", Lazarus Long uses his ship to take several shiploads of colonists to the planet New Beginnings, along with all of the equipment and supplies they'll need to set up a new colony.
- Zig-Zagged between this and The Ark in The Restaurant at the End of the Universe. Ford and Arthur visit a ship, one of three sent out from a doomed planet to colonize someplace else (which turns out to be Earth All Along), which would make it The Ark. This turns out to be a ruse to rid the original planet of the third of its population considered most useless (namely, middlemen), making it this trope. The narration then proceeds to mention that their homeworld shortly after was wiped out by a global pandemic that could have been prevented by said middlemen, making it (unintentionally) The Ark again.
- Spacecraft: 2000 to 2100 A.D: The Voyager is an interstellar colonization ship capable of carrying 1,200 passengers, their belongings and the equipment they will need to settle another planet. It resembles the Discovery in 2001: A Space Odyssey.
- Honor Harrington:
- Virtually all the major star nations featured, with the exception of the Solarian League, are descended from colonies set up during a period of time known as the Diaspora of Man. The colony ship Prometheus is considered to be the first of this wave.
- The Manticore Colony Ltd. dispatched the sleeper colony ship Jason to the Manticore system shortly after it was first surveyed. And they anticipated a Lightspeed Leapfrog situation so the colonists arranged to hire a fleet of FTL frigates to secure the system for them once the tech became widely available.
- Sholan Alliance: Humans used one of these to get to Kiess. They've since partially dismantled it.
- Known Space: In the Man-Kzin Wars series, these get a great deal of page time as they are used as escape ships during the invasion of Wunderland.
- In Defiance the Votan came to Earth in a fleet of STL sleeper Arks. Nearly thirty years after the war, pieces of the Arks still periodically fall to the planet.
- The Back Story of Firefly involves a fleet of these as the people of Earth That Was used them to leave and come to a new solar system. It's unclear whether any human life was left behind on Earth, which may have made these The Ark. Colony ships are still used from time to time, as Serenity encountered one that had the misfortune of encountering Reavers.
- Star Trek:
- "For the World is Hollow and I Have Touched the Sky" from Star Trek: The Original Series has this, but the ship is disguised as an asteroid and the inhabitants don't know that it's a ship at all; they can't see out from it and think it's the whole world (and the controlling computer wants to keep it that way until they reach their destination planet).
- Star Trek: Enterprise: One episode has the crew going to see what happened to a colony that had been set up on a remote planet. When no one is found at the colony, T'Pol speculates that they may have left the planet, but Archer points out that it would be pretty hard to do, since their colony ship was taken apart to be used as shelters.
- Doctor Who - "The Beast Below": After the Earth is rendered uninhabitable by solar flares, the people of Earth flee in great city-sized starships to find new planets to colonize. Great Britain and Northern Ireland (but not Scotland) conduct their search in the Generation Ship Starship UK which is powered by the last of the space whales.
- Eclipse Phase: Many Scum barges are former intrasystem colony ships that were turned away by their overcrowded intended destinations after The Fall. Most interstellar colonization is done by the Pandora Gates but Titan has launched a Brain Uploading type Seed Ship to Epsilon Eridani.
- Mindjammer has several types of colony ship for Settling the Frontier campaigns. And it's possible to randomly encounter 10,000-year old STL colony ships from before Plane Drive.
- In Galactic Civilizations each colony module on a ship carries up to 500 million population. When one first lands on an unclaimed planet the ship is disassembled to build the Initial Colony improvement. Later other colony ships (or military transports) can transfer population and remain intact.
- Sins of a Solar Empire is unique in that colony ships aren't expended when they colonize a planet. Though it's suggested they mostly carry administrators and marines to annex the planet's existing inhabitants.
- In the first Sword of the Stars game colonizers are used up whenever they're deployed on a planet with some infrastructure unbuilt. They increase population, infrastructure, and terraforming instantly. In the second game a fleet assigned to a colonize mission will ferry colonists from their base to the new world until it's self-sustaining, then become available for re-use.
- Unless you intentionally create a landlocked map, you'll usually wind up making at least a few of the seagoing version. A well-equipped one will include at least one Settlers unit and at least one military unit to protect the new settlement, plus possibly a Scout to search out premium sites for founding cities and additional Settlers or Engineers earmarked for improving infrastructure.
- Civilization also has a Science victory condition that invokes the space version by requiring the player to build a Sleeper Starship and launch it to Alpha Centauri. The games Sid Meierís Alpha Centauri and Civilization: Beyond Earth are Spiritual Successors that deal with the fate of the colonists when they arrive at their new planet.
- The first game of the Marathon Trilogy is set on the eponymous Colony Ship, a slower-than-light craft created by converting one of the Mars' moons, Deimos, into a space vessel.
- The Space Colony ARK from a handful of Sonic the Hedgehog titles is apparently a long-term habitable structure, but has remained inactive for the majority of the time we see it, staying in orbit over the planet.
- Xenoblade Chronicles X uses this in its opening sequence, in which the people of Earth are caught in the crossfire between two warring alien races, which leaves them no choice but to escape the conflict and the planet's ensuing destruction aboard large interplanetary vessels called "Arks" (seen from 0:36-0:58, here), each intended to colonize a new planet.
- In an early arc of Freefall the crew salvage parts from one of the planet's old colony ships to repair their own ship. It's stated that more ships are incoming.
- Several colony ships were built and launched after the Nanodisaster in Orion's Arm, many of them grown with cheap nano. After the colonists to Epsilon Indi suffered Cryonics Failure and only six survived no further attempts at colonization would rely on a single giant ship. Now a fleet of relativistic seed ships is usually deployed first, followed by construction of a beamrider station to bring more colonists in, and finally a wormhole terminus is carried by subrelativistic ship.
- Chakona Space: This is the direction that Neal Foster's Folly is headed along with dozens of allied interstellar cargo ships.
- The Titan Project from Don Bluth's Titan A.E. created a huge, globular spacecraft capable of converting cosmic debris and ice crystals into a class M planet. The Titan craft also carries the complete genomes of all known species on Earth. The plan was to create and terraform Earthlike worlds throughout the galaxy, seed them with Terran flora and fauna, then colonize the new worlds. The first planet created by the Titan was dubbed Planet Bob by Cale Tucker, the Lovable Rogue son of the Titan's creator.
- The Mayflower is the most famous of many ships that carried European migrants to the New World.
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