1976

Dates Unknown

 * Chad Boyle attempts to kill Ace; and, in at least one instance, succeeds. (NA: Timewyrm: Revelation)
 * In San Francisco, Carolyn McConnell meets the Doctor and Sam Jones, who are hunting vampires. (EDA: Vampire Science)

January

 * 12 - Agatha Christie dies. (DW: The Unicorn and the Wasp); at some point soon before her death, she is visited by the Doctor and Donna Noble, who remind her of the cirumstances surrounding her disappearance in the 1920s. (DW: The Unicorn and the Wasp; deleted scenes)

Summer

 * The Vardans attempt an invasion of Earth with Mortimus' assistance. (NA: No Future)

Late Summer or Early Autumn

 * Brigadier Alistair Lethbridge-Stewart retires from UNIT and becomes a teacher at Brendon Public School. (DW: Mawdryn Undead)

January

 * 3 - DW: The Brain of Morbius Episode 1 First Broadcast
 * 10 - DW: The Brain of Morbius Episode 2 First Broadcast
 * 15 - Doctor Who and the Loch Ness Monster First Published.
 * 17 - DW: The Brain of Morbius Episode 3 First Broadcast
 * 24 - DW: The Brain of Morbius Episode 4 First Broadcast
 * 31 - DW: The Seeds of Doom Episode 1 First Broadcast

February

 * 7 - DW: The Seeds of Doom Episode 2 First Broadcast
 * 14 - DW: The Seeds of Doom Episode 3 First Broadcast
 * 19 - Doctor Who and the Dinosaur Invasion and Doctor Who and the Tenth Planet First Published, the latter being the first Target Books-commissioned novelisation of a solo First Doctor story (the initial three published in 1973 were in fact reprints of novels first published in the mid-1960s).
 * 21 - DW: The Seeds of Doom Episode 4 First Broadcast
 * 28 - DW: The Seeds of Doom Episode 5 First Broadcast

March

 * Campbell Singer, who played the King of Hearts, Sgt. Rugg, and Joey the Clown in "The Celestial Toymaker," dies.
 * 6 - DW: The Seeds of Doom Episode 6 is first broadcast, ending Season 13.
 * 18 - Doctor Who and the Ice Warriors First Published.

May

 * 20 - Doctor Who - The Revenge of the Cybermen First Published.

July

 * 22 - Doctor Who and the Genesis of the Daleks First Published.

August

 * 6 - William Mervyn (Sir Charles Summer in DW: The War Machines), dies in London.
 * 19 - Doctor Who and the Web of Fear First Published.

September

 * 4 - Season 14 begins, with the first broadcast of DW: The Masque of Mandragora Episode 1.
 * 11 - DW: The Masque of Mandragora Episode 2 First Broadcast
 * 18 - DW: The Masque of Mandragora Episode 3 First Broadcast
 * 23 - Doctor Who and the Space War First Published. This adaptation of Frontier in Space was the last Target Books novelisation to use a title different from that of the source material (other than the practice of adding Doctor Who and... to the titles, which remained in place for several more years, and the occasional spelling deviation).
 * 25 - DW: The Masque of Mandragora Episode 4 First Broadcast

October

 * 2 - DW: The Hand of Fear Episode 1 First Broadcast
 * 4 - The Time Machine, a special radio story featuring Tom Baker and Elisabeth Sladen is broadcast by BBC Radio as part of it's Exploration Earth series. This is the first made-for-radio Doctor Who adventure and the last of its kind until Slipback in 1986.
 * 9 - DW: The Hand of Fear Episode 2 First Broadcast
 * 16 - DW: The Hand of Fear Episode 3 First Broadcast
 * 21 - Doctor Who and the Planet of the Daleks First Published. Although not widely recognized as such, the original serials Frontier in Space and Planet of the Daleks formed one story arc. As such, by Target Books publishing the adaptation of Frontier (as Doctor Who and the Space War) in September, followed by part 2 this month, these two books actually predate the two-volume novelisation of The Daleks' Master Plan (widely considered the first occurrence of this).
 * 23 - DW: The Hand of Fear Episode 4 First Broadcast. Elisabeth Sladen leaves the series with this episode (but she'd be back).
 * 30 - DW: The Deadly Assassin Episode 1 First Broadcast. The Master returns.

November

 * 6 - DW: The Deadly Assassin Episode 2 First Broadcast
 * 13 - DW: The Deadly Assassin Episode 3 First Broadcast
 * 20 - DW: The Deadly Assassin Episode 4 First Broadcast

December

 * 16 - Doctor Who and the Pyramids of Mars First Published.
 * The second edition of The Making of Doctor Who is published by Target Books; this is a revised version of an earlier book first released by another company, Piccolo Books, in 1972, but updated to include the Fourth Doctor.

Unknown

 * Doctor Who and the Pescatons is released on LP by Argo Records. This is the first original audio drama based upon the franchise, predating the releases of Big Finish by decades.
 * The Doctor Who and the Daleks Omnibus, edited by Terry Nation and featuring reprints of two Terrance Dicks novelisations, published by St. Martins Press.