| Interstate Highway System | Interstate Highway System |
| Interstellar cloud | Stjernetåge |
| Interstellar dust | Kosmisk støv |
| Interstellar travel | Interstellar rejse |
| Interstitial frequency | Mellemfrekvens |
| Intertextuality | Intertekstuel reference |
| intertidal zone | tidevandszone |
| Interval | Toneinterval |
| Intervening sequence | Intron |
| intervention fund | interventionsfond |
| intervention in nature and landscape | indgriben i natur og landskab |
| intervention on land | indgriben på land |
| Intervertebral fusion | Fusion |
| Interview with a vampire | En vampyrs bekendelser |
| Interview with the Vampire | En vampyrs bekendelser |
| Intervista | Interview |
| InterWiki | Interwiki |
| Intestinal | Tarm |
| intestine | tarm |
| intestines | involde |
| Inti-Illimani | Inti-Illimani |
| Intimate relationship | Parforhold |
| into | om |
| intoxicated | drukken |
| intoxication | forgiftning |
| Intra | Indre |
| Intranet | Intranet |
| Intravenous therapy | Drop |
| introduce | udføre |
| introduced | introduceret |
| Introduced species | Invasiv art |
| introduction of animal species | indføring af dyrearter |
| introduction of plant species | indføring af plantearter |
| Intrusion Countermeasures Electronics | Is |
| Inuit Ataqatigiit | Inuit Ataqatigiit |
| Inuktitut | Inuktitut |
| inundation | alluvium |
| invalid | ugyldig |
| Invalid out | Frigive |
| Invariant mass | Hvilemasse |
| Invasion of Grenada | Invasionen af Grenada |
| Invasive species | Invasiv art |
| invent | opfinde |
| invention | opfindelse |
| inventiveness | skaberevne |
| inventory | status |
| inventory of forest damage | opgørelse over skovskader |
| Inverclyde | Inverclyde |
| Inverness | Inverness |
| Inverse limit | Grænseværdi |
| Inverse trigonometric function | Arcussinus |
| inversion | inversion |
| inversion layer | inversionslag |
| Inversive geometry | Invers |
| invertebrate | hvirvelløse dyr |
| inverted comma | anførelsestegn |
| Inverted nipple | Indadvendte brystvorter |
| investigate | undersøge |
| investigation | undersøgelse |
| Investigative journalism | Scoop |
| Investiture Controversy | Investiturstriden |
| investment | investering |
| Investment AB Kinnevik | Kinnevik |
| Investment tax credit | Leasing |
| Investor AB | Investor AB |
| invitation | indbydelse |
| invite | indbyde |
| Inđija | Inđija |
| Io | Io |
| Ioan Gruffudd | Ioan Gruffudd |
| Iocaste | Iokaste |
| iodine | jod |
| Iolanda Balaş | Iolanda Balas |
| ion | ioner |
| Ion Antonescu | Ion Antonescu |
| ion exchange | ionbytning |
| ion exchanger | ionbytter |
| Ion thruster | Ion-motor |
