1983

August

 * 19 - Ianto Jones is born.

Undated

 * The Brigadier meets the Doctor and regains his memory. Turlough joins the Doctor on his travels. (DW: Mawdryn Undead)


 * According to the Brigadier, Harry Sullivan is doing "hush-hush" work on behalf of NATO at this time. (DW: Mawdryn Undead)


 * The Doctor and the Brigadier are abducted by Borusa while attending a UNIT reunion. (DW: The Five Doctors)


 * Bernice Summerfield is reunited with her father. (NA: Return of the Living Dad)

January

 * 03 - Arc of Infinity Episode 1 First Broadcast


 * 05 - Arc of Infinity Episode 2 First Broadcast


 * 11 - Arc of Infinity Episode 3 First Broadcast


 * 12 - Arc of Infinity Episode 4 First Broadcast


 * 18 - Snakedance Episode 1 First Broadcast


 * 19 - Snakedance Episode 2 First Broadcast


 * 25 - Snakedance Episode 3 First Broadcast


 * 26 - Snakedance Episode 4 First Broadcast

February

 * 01 - Mawdryn Undead Episode 1 First Broadcast


 * 02 - Mawdryn Undead Episode 2 First Broadcast


 * 08 - Mawdryn Undead Episode 3 First Broadcast


 * 09 - Mawdryn Undead Episode 4 First Broadcast


 * 15 - Terminus Episode 1 First Broadcast


 * 16 - Terminus Episode 2 First Broadcast


 * 20 - Peter Glaze, who played the City Administrator in "The Sensorites" and the Brigadier in a Doctor Who parody segment of Crackerjack!, dies in Dartford, England.


 * 22 - Terminus Episode 3 First Broadcast


 * 23 - Terminus Episode 4 First Broadcast

March

 * 01 - Enlightenment Episode 1 First Broadcast


 * 02 - Enlightenment Episode 2 First Broadcast


 * 08 - Enlightenment Episode 3 First Broadcast


 * 09 - Enlightenment Episode 4 First Broadcast


 * 15 - The King's Demons Episode 1 First Broadcast


 * 16 - The King's Demons Episode 2 First Broadcast


 * 21 - Bruno Langley, who portrayed companion Adam Mitchell, is born in Devon, England.

November

 * 25 - "The Five Doctors" is first broadcast in the UK. A satellite feed of a slightly truncated version was broadcast in the US and Canada on 23 November.

Unknown date

 * Filming for Planet of Fire takes place in Lanzarote, Canary Islands, marking the first time Doctor Who has been filmed outside the European continent.