->''"Here lies Terra, known to antiquity as Earth, the heart of the Imperium of Man..."''
-->-- '''[[TabletopGame/Warhammer40000 Warhammer 40,000]]'''

This is a fairly simple trope. It is simply the habit of calling Earth "Terra" in Sci Fi. The word is adopted from the [[AltumVidetur Latin]] word for, well, earth.

It is used to make the planet Earth follow the Roman naming systems for the planets of the Solar System and also as a [[RuleOfCool more respectable]] description for the inhabitants of the planet rather than "[[PunyEarthlings Earthling]]". Another advantage is that it is language-neutral, since it is by far the most common word for the planet--three world languages call this planet Terra or some variant thereof,[[note]]French "Terre", Portuguese "Terra" and Spanish "Tierra" all come from the Latin word -- which gives French SF authors the convenient advantage of referring to the inhabitants as "Terriens", or "Terrans".[[/note]] as do many Romance (i.e. Latin-derived) languages with less speakers. And it provides a convenient standardisation in that Earth is otherwise the only planet in the Solar system that is not named for a Roman deity.

This is often accompanied by reference to Earth's sun as "Sol", and the moon as "Luna", to differentiate them from other suns or moons.

Calling Earth "Terra" may be a result of an EarthThatWas scenario.

Due to the evolution of the pronunciation of Latin itself, the older form "Tella" also fits here. SF authors of the 1930s also applied the masculine version of the word, "Tellus,"[[note]]Actually, in Latin "Tellus, Telluris" is feminine, the -us desinence being non-gender indicative as it belongs to the third declination, much like the equally feminine "Venus, Veneris".[[/note]] which means the same thing.

For whatever reason "Terran" is frequently used as an [[HumansByAnyOtherName alternate name for humans]] even when the planet is still called Earth.



[[folder: Anime and Manga ]]

* In ''LightNovel/TrinityBlood'', [[OurVampiresAreDifferent Methuselahs]] refer to humans as Terrans. Because, as the [[AllThereInTheManual original novels reveal]], [[spoiler:the first Methuselahs were created on Mars]].
* ''Manga/TowardTheTerra''.
* In ''Manga/OutlawStar'', humans are mostly referred to as just that, but some characters refer to them as Terrans. Notably [[ProudWarriorRaceGuy Aisha]], and usually with a note of derision.
* In ''Anime/SpaceBattleshipYamato2199'', the alien Gamilas call Earth ''Terron'' which is explained as their rendering of Terra/Terrans. (Apparently they couldn't tell the name of the planet and that of the species apart--they cannot do that for their own planet, either.)


[[folder: Fan Works ]]

* The primary kaiju home world and setting for the Godzilla series in ''FanFic/TheBridge'' is referred to as Terra, which is also a moniker for certain labels. As such the benign kaiju faction is referred to as the ''Terran Defenders'' to distinguish them from the neutral or malign ''Mutations''.


[[folder: Film ]]

* In ''Film/GuardiansOfTheGalaxy'' Quill is exclusively referred to as "Terran," and Earth as "Terra," by most of the alien races, particularly Nova Corps. Though he's also called a "hummie" occasionally by Rocket, so they're at least aware of the word humans use for themselves.


[[folder: Literature ]]

* The government in ''Literature/StarshipTroopers'' by Creator/RobertAHeinlein is the Terran Federation.
* The titular organization in the ''Terran Trade Authority'' series by Stewart Cowley.
* The ''Saga of the Seven Suns'' series has the Terran Hanseatic League.
* Most of Creator/AndreNorton's science fiction stories.
* Creator/EEDocSmith's stories referred to our planet as both Earth and Terra. He also used the alternate name Tellus.
* Creator/PoulAnderson's ''Literature/TechnicHistory'' stories refer to Terra and the Terran (or sometimes Terrestrial) Empire. Anderson justifies the use in an odd way: once, an alien asked where he comes from replies, "from earth" - but that is what the name of his home planet means if he translates it, so "Terra" is used to distinguish various earths spread throughout the Galaxy.
* An odd inversion is that Edmond Hamilton's ''Starwolf'' trilogy always speaks of humans as Earthmen, but the back-cover blurb describes the main character as a Terran.
* Creator/KeithLaumer's ''Literature/{{Retief}}'' stories frequently use the abbreviated "Terry" for Terrestrial. There's no sense of it being derogatory, as the Terries use it themselves often enough. Also, Earth's diplomatic corps is known as the ''Corps Diplomatique Terrestrienne''.
* In Creator/SergeyLukyanenko's ''Literature/LineOfDelirium'' trilogy, Earth is renamed Terra and serves as the capital of the [[TheEmpire Human Empire]]. It appears to have happened sometime during the [[TheGreatOffscreenWar Vague War]], as a note Kay finds dating back to the war still refers to the planet as Earth.
* "Terra" and "Terrans" are used throughout Creator/HBeamPiper's "Terro-Human Future History".
* "Terra" is the most common name for the home planet of Perry Rhodan.
* Earth has become known as "Terra" in S.L. Viehl's ''Literature/{{Stardoc}}'' series.
* In Elliot S. Maggin's Franchise/{{Superman}} novel ''Literature/LastSonOfKrypton'', Lex Luthor complains when aliens call him an Earthling, because he prefers "Terran". They explain that the translator operates according to the listener's intention, so if Luthor decides he wants to hear "Terran" instead, that's what he'll hear. (It works, at which point he decides to make the translations of his interrogators' names and species terms as insulting to them as possible.)
* In the novelization of ''Film/MenInBlack'', humans are called "terries". (At least by Edgar the bug, so it's likely a derogatory derivative of "terran".)
* In Bob Shaw's ''Who Goes Here?'' many of the officers of Earth's military prefer the term "Terra". One enlisted man notes it's often a sign of an idealistic fool who's likely to get his men killed; the ones who say "The Mighty Terra" are particularly bad. Naturally, the protagonist's commanding officer is of this type.
* In the ''Literature/{{Catteni}}'' series by Creator/AnneMcCaffrey, the humans are referred to as "Terrans" by the alien Catteni, and sometimes by the humans themselves.
* In Creator/FrancisCarsac's ''Robinsons of the Cosmos'', the TransplantedHumans end up calling their new planet "Tellus". At the end, they name their new unified nation the Union of Tellus Republics.


[[folder: Live Action TV ]]

* ''Franchise/StarTrek'':
** The MirrorUniverse has the Terran Empire (until it collapses, at least). The main universe occasionally also refers to our solar system as the Terran System (though it's more frequently known as the Sol system or Sector 001).
** Spock is asked in one [[Series/StarTrekTheOriginalSeries Original Series]] episode if he is "Terran or Vulcan."
** In ''Series/StarTrekEnterprise'', there is a human supremacist group named "Terra Prime". There is also a failed colony known as Terra Nova.
* ''Series/BlakesSeven '' has a Terran Federation.
* In ''Series/StargateSG1'' it was mentioned once that the [[{{Precursors}} Ancients]] called earth Terra, of course, [[JustifiedTrope Latin is derived from their language]].
** Though most of the time the Goa'uld word, Tau'ri, is used for humans from earth.
*** "Tau'ri" (lit. "The First World") is the name for Earth itself. Humans from Earth were originally referred to as "Humans of the Tau'ri," and was eventually shortened to just "Tau-ri" for the sake of brevity.
* Played with and finally averted in the original ''Series/{{Battlestar Galactica|1978}}''--"Terra" turns out not to be Earth, but rather a splinter group from the Thirteenth Tribe that colonized Earth.
** Surprisingly, their history is similar to ours, except on Terra ThoseWackyNazis and DirtyCommunists have joined together[[note]]Which is nowhere near as silly as it sounds and nearly ended up being TruthInTelevision[[/note]] to form the Eastern Alliance, a totalitarian regime that seeks to rule the universe. They also sign peace treaties that they have no intention of keeping (DoesThisRemindYouOfAnything).
* Aliens very rarely refer to humans originating from Earth as "Tellurians" in ''Series/{{Doctor Who}}''.
* ''Series/SpacePatrolUS'' has Terra, a sort of Space [[UsefulNotes/{{Australia}} Canberra]] that functions as both the capital city and base of operations for the Space Patrol.


[[folder: Tabletop Games ]]

* The ''TabletopGame/BattleTech'' universe had the Terran Hegemony. The planet is mostly referred to as Terra, as well.
* ''Renegade Legion'' has an imperial government known as the Terran Overlord Government.
* Holy Terra is the homeworld of the Imperium of Man in the ''TabletopGame/{{Warhammer 40000}}'' universe.
** The use of the Latin word is particularly appropriate, as 40k has a translation convention of using Latin (or debased Latin-like words) to represent "High Gothic"--the archaic administrative and religious language of the Imperium of Man. That said, even when characters are using the more colloquial "Low Gothic" (represented by English) they still tend to call the human homeworld "Terra". The term probably filtered down into Low Gothic from High Gothic, given that to the vast majority of Imperial citizens Terra is a near-mythical place of superlative religious significance, referred to mainly in hymns and prayers.
** The ''Literature/HorusHeresy'' series shows that this isn't an all-that-old development, given the time scale of the world - by the times of Heresy, two centuries after the inception of the Imperium, some Astartes still refer to the Throneworld as Earth. ''The Beast Arises'', which takes place some two thousand years after, also notes that "Earth" is still one of the names for Terra, although by that time it's clearly going out of use.
* The ''TabletopGame/{{Starfire}}'' universe has the Terran Federation.
* The Terran Confederation in ''TabletopGame/{{Traveller}}''.
** Terrans are alternately called "Solomani"(men from the sun) and that is the preferred rendering in the Third Imperium era which is the default time of the TabletopGame/{{GURPS}} line.
* Inverted in ''Manhunter'', the long out-of-print sourcebook for ''TabletopGame/{{Rifts}}'' (and the only officially-sanctioned ''Rifts'' book not published by Creator/PalladiumBooks). The book has Earth as well as Terra, the later is a new homeworld founded by Humans after Earth was rendered [[ApocalypseHow nearly uninhabitable]].
* ZigZagged in ''TabletopGame/TwilightImperium'', the "human" faction is known as the Federation of Sol, but the home planet itself is called "Jord", "soil" in the Scandinavian languages.


[[folder: Theme Parks ]]
* [[Ride/UniversalStudios Universal's]] Theatre/HalloweenHorrorNights in 2005 was themed around a horrifying alternate planet called "Terra Cruentus" [[note]]When translated, the name means [[MeaningfulName "Blood Earth"]][[/note]]


[[folder: Video Games ]]

* In ''[[VideoGame/{{X}} X3 Terran Conflict]]'', the humans in the Sol system are referred to as "Terrans", but the planet is still called Earth, as is their government (the Earth State); the games make the distinction between "human" used to refer to the species as a whole, and national affiliation [[HumansAreDivided like the Terran, Argon, and Solaran]]. In ''Videogame/XRebirth'', the residents of the Republic of Cantera are sometimes referred to as Terrans, being an Earth State LostColony.
* Happens partially in ''VideoGame/StarControl'', where instead of the Sun and the Moon we have Sol and Luna. Earth is named Earth and the humans Earthlings and not Terrans, however.
* The Galactic Terran Aliance from ''VideoGame/FreeSpace''. Earth is still Earth, however.
** In the sequel, two sides use Terran in their name: the Galactic Terran-Vasudan Alliance (composed of humans and Vasudans) and the Neo-Terran Front (composed of anti-Vasudan human radicals, with a vision of 'Neo-Terra' as an utopia for humans).
* In ''VideoGame/StarCraft'', humans who aren't from Earth are called Terrans. Humans from Earth are called...humans. Earth is still called Earth.
** The French translation uses untranslated "Terran" for the Terran confederacy (and later empire) of the Koprulu sector, and translated "Terriens" for the United Earth Directory forces.
* ''VideoGame/WingCommander'' has the Terran Confederation, with "Terrans" occasionally being used by non-human races to refer to the speciess originating from Sol III. The ExpandedUniverse makes it clear that the Confederation is centered on Terra/Earth, but includes members from other species, such as the Firekkans.
* In the ''VideoGame/{{Unreal}}verse'', the Skaarj call humans Terrans.
* ''Videogame/PlanetSide'' has the Terran [[PeoplesRepublicOfTyranny Republic]], which still calls its home Earth.
* The main race in the sequel to ''VideoGame/GalacticCivilizations'' is the Terran Alliance.
** That is the default name, though. You can call it what you wish.
* ''VideoGame/RockNRollRacing'' refers to Snake Sanders' home planet (very blatantly Earth-like) as Terra.
* In ''Franchise/FinalFantasy'', the setting is usually called "Gaia" (Greek for Earth) but in ''VideoGame/FinalFantasyIX'' the plot's impetus is an invasion by another planet known as Terra.
* The ''Battle Opera Gunmech'' universe has the Terran Alliance.
* ''VideoGame/AdventureQuest''.
* Used in ''VideoGame/CrashNitroKart''. Earth and Terra are separate planets, and one of the inhabitants of Terra believes Earth to be a copy of it.
* In ''Franchise/MassEffect'', the Star of Terra is one of the Systems Alliance's highest military decorations. If you picked the War Hero background, Shepard was awarded it after the Skyllian Blitz.
* ''VideoGame/ConquestFrontierWars'' has humans called Terrans, but Earth is still Earth.
* The leader of the planet-themed Stardroids in ''VideoGame/MegaManV'' is named "Terra", however in the Japanese version he's simply known as "Earth".
* Subverted in ''VideoGame/EarthAndBeyond''. Earth is still called Earth, although humans who live on its surface (and those who owe allegiance to Earth) are called Terrans.
* Subverted in ''Videogame/StarCitizen''. There's a planet called [[http://starcitizen.wikia.com/wiki/Terra Terra]], but it's actually a major colony that happens to look extremely similar to Earth. [[http://starcitizen.wikia.com/wiki/Galactic_Guide:_Earth Earth]] itself remains and is still the political, economical and military core of the titular United Empire of Earth(UEE).
* Played with in ''Videogame/StarRuler'' and ''Videogame/StarRuler2'', where the human faction are referred to as "Terrakin". The plotless first game never explains why the starting planet isn't Earth/Terra, but the second game's backstory explains the playable Terrakin as a LostColony whose colony ship was thrown way off course.
* Played with in ''VideoGame/MasterOfOrion: Conquer the Stars'', where the Terrans are TransplantedHumans hailing from Alpha Ceti (where they were dumped by the [[AbusivePrecursors Antarans]] after they were no longer needed). The main humanity is still called "Human". The Terran Khanate is the EvilCounterpart to the Human Republic.


[[folder: Web Original ]]

* All beings that can trace their lineage back to Earth in ''WebOriginal/OrionsArm'' are referred to as 'Terragen', and the region of space they inhabit is, obviously, called the Terragen Sphere. Note that most terragens were not actually born/created on Earth, and are hence ''not'' Terrans proper--they're just all, ultimately, descended from or created by Terrans.
* ''Webcomic/EscapeFromTerra'', obviously. And many of the planet's inhabitants are referred to as "Terries".
* In ''Webcomic/SchlockMercenary'' Earth still retains its English name. But the star it orbits is known as "Sol", and its terraformed and heavily populated moon was renamed "Luna" by "The Committee for Differentiating Our Planet From a Bare Behind." The term "Terran" is in use, but it refers to any of the many sentient races hailing from Earth (thanks to widespread use of [[UpliftedAnimal uplifting]]) and not just humans.


[[folder: Western Animation ]]

* ''WesternAnimation/BattleForTerra'' is a subversion. Terra here is an alien planet named so by the humans fleeing the destroyed Earth. Its real name is unknown.
* The baseline humans are referred as "Terrans" in ''WesternAnimation/ExoSquad'' to distinguish them from Neosapiens and get around the small fact that both races are human, regardless of the fact that they don't call Earth "Terra", or that many humans are natives of Venus or the moons of the outer planets.


[[folder: Real Life ]]

* One of Perry Rhodan's authors, Willi Voltz, used the word in a political context. He was heard addressing his readers as "Terrans" and explaining that he wanted to have this understood as a honorific of people whose mindset was advanced enough that they would identify themselves as members of the human species as a whole and not of an ethnic or national community.