- Imp
- Impact chamber
- Impact suit
- Impaled Cyberman
- Impasse
- Impasse (comic story)
- Impatiens
- Impeachment
- Impeller engine
- Imperator (The Glass Prison)
- Imperator Presidency
- Imperator crisis
- Imperiad! The Games Journal of Emperors and Warrior-Kings
- Imperial
- Imperial-Renegade Dalek Civil War
- Imperial-class
- Imperial Air Galley
- Imperial Army
- Imperial Army Air Fleet
- Imperial City
- Imperial Clans
- Imperial Club
- Imperial Coin
- Imperial College
- Imperial Command Ship
- Imperial Court
- Imperial Dalek
- Imperial Dalek/Appearances
- Imperial Dalek (In Remembrance)
- Imperial Dalek Army
- Imperial Dalek battle cruiser
- Imperial Dalek mothership
- Imperial Earth Spydrone
- Imperial Engine
- Imperial Flagship
- Imperial Guard
- Imperial Guard (Imperiatrix)
- Imperial Guard (Nightmare in Silver)
- Imperial Guard Dalek (The Eternity Clock)
- Imperial Guard Dalek (The Parting of the Ways)
- Imperial Guard Dalek 1
- Imperial Guard Dalek 2
- Imperial Heaven
- Imperial ID
- Imperial Japanese Army
- Imperial Japanese flag
- Imperial Landsknechte
- Imperial Lee
- Imperial Moon (novel)
- Imperial Palace
- Imperial Regulator
- Imperial Sontaran Fleet
- Imperial State Crown
- Imperial Trans-Antarctic Expedition
- Imperial Walker
- Imperial family
- Imperial penny
- Imperial shilling
- Imperiatrix
- Imperiatrix (audio story)
- Imperiatrix Imprimatur
- Imperium
- Imperium Casinos
- Impersonation
- Impervium
- Impervium-lanthanide
- Implementation Unit
- Implicate theory
- Implication
- Imploder
- Implosion
- Implosion Grenade
- Importance
- Impossible Worlds
- Impossible Worlds, Impossible Things: Cultural Perspectives on Doctor Who, Torchwood and The Sarah Jane Adventures
- Impossible soufflé grill
- Impossibly Glamorous (audio story)
- Imposter
- Imposters (short story)
- Imprimatur
- Imprimatur Cortex
- Imprisonment Post-Shada: Punishment or Parole
- Improv
- Impulse beam
- Impulse cannon
- Impulse gyrator
- Impulse laser