2003 (releases)


 * January - AUDIO: Jubilee was first released.
 * January - AUDIO: Dalek War: Chapter One was first released.
 * January - First issue of Miranda was published.
 * 6 January - Fear of the Dark was first published.
 * 9 January - AUDIO: No Place Like Home was first released as an exclusive CD with Doctor Who Magazine. The CD also included Episode 1 of AUDIO: Dalek War: Chapter One.
 * 31 January - Rip Tide was first published.
 * February - AUDIO: Nekromanteia was first released.
 * February - AUDIO: Dalek War: Chapter Two was first released.
 * 3 February - Resurrection of the Daleks was released to DVD in Region 4.
 * 3 February - The Domino Effect was first published.
 * 17 February - The Seeds of Death was released to DVD in the UK.
 * March - AUDIO: The Dark Flame was first released.
 * March - AUDIO:  Taren Capel was first released.
 * March - AUDIO: The Mirror Effect was first released.
 * 3 March - Blue Box was first published.
 * 4 March - Vengeance on Varos and The Aztecs were released to DVD in Region 1.
 * April - AUDIO: Doctor Who and the Pirates was first released.
 * April - AUDIO: Dalek War: Chapter Three and AUDIO: Dalek War: Chapter Four were first released.
 * April - AUDIO: The Bellotron Incident was first released.
 * 7 April - Reckless Engineering was first published.
 * 20 April - REF: The Nth Doctor, 2nd edition, was published.
 * 24 April -Short Trips: Companions was first published.
 * 24 April - The Audio Scripts was released by Big Finish.
 * 24 April - Wonderland was first published.
 * 28 April - The Talons of Weng-Chiang was released to DVD in the UK.
 * May - AUDIO: Creatures of Beauty was first released.
 * May - NOTVALID: Auld Mortality was first released.
 * May - The second issue of the comic book series Miranda was published.
 * 2 May - The BBC's website launched a six-part webcast production of WC: Shada, remounting the TV story of the same title that was abandoned in 1979.
 * 5 May - The Seeds of Death was released to DVD in Region 4.
 * 5 May - Loving the Alien was first published.
 * 9 May - WC: Shada webcast Episode 2 was released.
 * 16 May - WC: Shada webcast Episode 3 was released.
 * 19 May - Shell Shock was first published.
 * 23 May - WC: Shada webcast Episode 4 was released.
 * 30 May - WC: Shada webcast Episode 5 was released.
 * June - AUDIO: Project: Lazarus was first released.
 * June - NOTVALID: Sympathy for the Devil was first released.
 * 2 June - The Last Resort was first published.
 * 6 June - WC: Shada webcast Episode 6 was released.
 * 9 June - The Dalek Invasion of Earth was released to DVD in the UK.
 * 30 June - The Talons of Weng-Chiang was released to DVD in Region 4.
 * July - AUDIO: Flip-Flop was first released.
 * July - NOTVALID: Full Fathom Five was first released.
 * 2 July - Carnival of Monsters and Resurrection of the Daleks were released to DVD in Region 1.
 * 3 July - Short Trips: A Universe of Terrors was first published.
 * 7 July - The Colony of Lies was first published.
 * 10 July - The novella The Cabinet of Light was first published by Telos Publishing.
 * The first issue of a comic book based upon Faction Paradox was published by US-based Image Comics.
 * August - AUDIO: Omega was first released.
 * August - AUDIO: The Draconian Rage was first released.
 * 4 August - Timeless was first published.
 * 13 August - The Dalek Invasion of Earth was released to DVD in Region 4.
 * 14 August - Vengeance on Varos was released to DVD in Region 4.
 * 18 August - Earthshock was released to DVD in the UK.
 * 28 August - The Audio Scripts: Volume Two was released by Big Finish.
 * September - AUDIO: Davros was first released.
 * September - NOTVALID: He Jests at Scars... was first released.
 * September - AUDIO: Checkmate was first released.
 * September - NOTVALID: Deadline was first released.
 * 1 September - AUDIO: Doctor Who at the BBC was first released by BBC Audio.
 * 1 September - Wolfsbane was first published.
 * 3 September - PROSE: Life During Wartime was first published.
 * 8 September - The Two Doctors was released to DVD in the UK.
 * 25 September - Fallen Gods was first published.
 * The second and final issue of the Faction Paradox comic book series was published by Image Comics.
 * October - AUDIO: Master was first released.
 * October - NOTVALID: Exile was first released.
 * 1 October - Earthshock was released to DVD in Region 4.
 * 6 October - The Curse of Fenric was released to DVD in the UK.
 * 6 October - Emotional Chemistry was first published.
 * 7 October - The Talons of Weng-Chiang and The Dalek Invasion of Earth were released to DVD in Region 1.
 * 9 October - Short Trips: The Muses was first published.
 * November - AUDIO: Zagreus was first released.
 * November - AUDIO: The Wormery was first released.
 * 3 November - Deadly Reunion was first published.
 * 12 November - The Three Doctors was released to DVD in Region 4.
 * 13 November - The BBC website launched a new webcast serial, WC: Scream of the Shalka.
 * 13 November - AUDIO: Living Legend was first published; this was a single-episode story released exclusively with Doctor Who Magazine. The disc also included a documentary featurette on the making of AUDIO: Zagreus.
 * 20 November - WC: Scream of the Shalka episode 2 was released.
 * 20 November - The Winning Side was first published, launching the Time Hunter series.
 * 20 November - The novella The Eye of the Tyger was first published by Telos Publishing.
 * 21 November -  Children in Need 2003 was first broadcast on BBC One as part of the Children in Need telethon.
 * 22 November - The first part of Doctor Who @40 was first broadcast. Part One of K9 presents served as an introduction.
 * 23 November - The second part of Doctor Who @40 was first broadcast. Part Two of K9 presents served as an introduction.
 * 24 November - The Three Doctors was released to DVD in the UK.
 * 27 November - WC: Scream of the Shalka episode 3 was released.
 * December - AUDIO: Scherzo was first released.
 * December - AUDIO: Shada was first released.
 * December - REF: Howe's Transcendental Toybox, 2nd edition, was first published.
 * 4 December - WC: Scream of the Shalka episode 4 was released.
 * 11 December - WC: Scream of the Shalka episode 5 was released.
 * 18 December - WC: Scream of the Shalka episode 6 was released.
 * 18 December - The novella Companion Piece was first published by Telos Publishing.
 * 30 December - The Story of Doctor Who was first broadcast.
 * Unknown - The original Llangollen Doctor Who Experience, in North Wales, closed.