49 books in series
The Horus Heresy - Black Library recommended reading order
The Horus Heresy - Black Library recommended reading order is a 49-book series with 49 primary works first released in 2006 with contributions by Dan Abnett, Graham McNeill, James Swallow, Mitchel Scanlon, Ben Counter, Mike Lee, Gav Thorpe, Rob Sanders, David Annandale, John French, Nick Kyme, Chris Wraight, Guy Haley, Aaron Dembski-Bowden, Anthony Reynolds, Matthew Farrer, and Andy Smillie.
| #1 |  Horus, SeƱor de la Guerra
| 4 | 1 read | ||
| #2 |  False Gods
| 3.92 | 44 reads | ||
| #4 |  The Flight of the Eisenstein
| 4.16 | 27 reads | ||
| #5 |  Fulgrim
| 3.46 | 18 reads | ||
| #6 |  Descent of Angels
| 3.5 | 12 reads | ||
| #7 |  Legion
| 4.6 | 15 reads | ||
| #8 |  Battle for the Abyss
| 3.39 | 12 reads | ||
| #9 |  Mechanicum
| 3.86 | 11 reads | ||
| #10 |  Tales of Heresy | 4.2 | 6 reads | ||
| #11 |  Fallen Angels
| 4.25 | 6 reads | ||
| #12 |  A Thousand Sons
| 3.89 | 9 reads | ||
| #13 |  Nemesis
| 3.8 | 7 reads | ||
| #15 |  Prospero Burns : the wolves unleashed
| 4.29 | 8 reads | ||
| #16 |  Age of Darkness | 4.5 | 4 reads | ||
| #17 |  The Outcast Dead
| 3.25 | 4 reads | ||
| #18 |  Deliverance Lost
| 4 | 7 reads | ||
| #19 |  Know No Fear (The Horus Heresy, #19)
| 4.17 | 8 reads | ||
| #19.6 |  The Honoured
| 4 | 1 read | ||
| #19.7 |  The Unburdened
| 3 | 2 reads | ||
| #20 |  The Primarchs | 3.33 | 3 reads | ||
| #20.5 |  Cybernetica
| 0 | 0 reads | ||
| #21 |  Fear to tread
| 3.25 | 4 reads | ||
| #22 |  Shadows of Treachery | 3.5 | 2 reads | ||
| #23 |  Angel Exterminatus
| 4 | 5 reads | ||
| #23.5 |  Tallarn: Executioner
| 0 | 0 reads | ||
| #23.7 |  Tallarn: Ironclad
| 0 | 0 reads | ||
| #25 |  Mark of Calth | 2.5 | 2 reads | ||
| #25.5 |  Promethean Sun Promethean Sun
| 0 | 0 reads | ||
| #25.6 |  Scorched Earth
| 0 | 0 reads | ||
| #26 |  Vulkan Lives
| 3.5 | 3 reads | ||
| #27 |  The Unremembered Empire
| 3.67 | 3 reads | ||
| #28 |  Scars
| 4.5 | 3 reads | ||
| #29 |  Vengeful Spirit
| 3 | 2 reads | ||
| #30 |  The Damnation of Pythos
| 2.5 | 2 reads | ||
| #31 |  Legacies of Betrayal
| 0 | 0 reads | ||
| #32 |  Deathfire
| 2 | 1 read | ||
| #33 |  War Without End | 0 | 0 reads | ||
| #34 |  Pharos
| 2.5 | 2 reads | ||
| #34.6 |  The Seventh Serpent
| 0 | 0 reads | ||
| #35 |  Eye of Terra
| 0 | 0 reads | ||
| #36 |  The Path of Heaven
| 4 | 1 read | ||
| #37 |  The Silent War | 0 | 0 reads | ||
| #38 |  Angels of Caliban
| 4 | 1 read | ||
| #39 |  Praetorian of Dorn
| 3 | 2 reads | ||
| #40 |  Corax
| 0 | 0 reads | ||
| #41 |  The Master of Mankind
| 3.67 | 4 reads | ||
| #42 |  Garro
| 4 | 3 reads | ||
| #43 |  Shattered Legions
| 1 | 1 read | ||
| #44 |  The Crimson King
| 4 | 1 read |