I’m fascinated by the idea of the end of the world. Especially when it includes zombies. In deference to those who prefer to remain zombie-free, I’ve * zombie books.
Wastelands: Stories of the Apocalypse, edited by John Joseph Adams
The End is Nigh, edited by John Joseph Adams and Hugh Howey
The End Has Come, edited by John Joseph Adams and Hugh Howey
Genesis by Bernard Beckett
The Reapers are the Angels by Alden Bell*
Ashes (Ashes Trilogy#1) by Ilsa J. Bick*
Devoured (The Hunger #1) by Jason Brant
World War Z by Max Brooks*
Lost Valley (Extinction #1) by Walt Browning
Satan’s Gate (Extinction #2)by Walt Browning
The Boy on the Bridge by M.R. Carey
The Girl with All the Gifts by M.R. Carey
Book of Koli by M.R. Carey
The Trials of Koli by M.R. Carey
Sea of Rust by C. Robert Cargill
Ex-Heroes by Peter Clines*
The Hunger Games by Suzanne Collins
Catching Fire (The Hunger Games #2) by Suzanne Collins
Mockingjay (The Hunger Games #3) by Suzanne Collins
The Twelve by Justin Cronin
Alas, Babylon by Pat Frank
The Last Bastion of the Living: A Futuristic Zombie Novel by Rhiannon Frater*
Feed by Mira Grant
L.A. Dark (Jeremy’s Run #1) by G.F. Gustav*
The Gone-Away World by Nick Harkaway
The Enemy by Charlie Higson*
Wool Omnibus by Hugh Howey
This Dark Earth by John Hornor Jacobs*
The Last by Hannah Jameson
Extinction Point (Extinction Point, #1) by Paul Antony Jones*
‘Til the World Ends by Kagawa, Aguirre and Duvall
Zombie, Ohio by Scott Kenemore*
Falling Sky (Ben Gold #1) by Rajan Khanna*
Rising Tide (Ben Gold #2) by Rajan Khanna*
The Stand by Stephen King
The Walking Dead, Book One (#1-12) by Robert Kirkman and Charlie Adlard*
The Walking Dead, Book Two (#13-24 ) by Robert Kirkman and Charlie Adlard*
Rot and Ruin (Benny Imura #1) by Jonathan Maberry*
Dust and Decay (Benny Imura #2) by Jonathan Maberry*
Incursion: Zombie Apocalypse by M.D. Massey
I Am Legend by Richard Matheson
After the Apocalypse by Maureen F. McHugh
Emergence by David R. Palmer
Boneshaker (The Clockwork Century, #1) by Cherie Priest*
The Inexplicables (The Clockwork Century, #5) by Cherie Priest*
Station Eleven by Emily St. John Mandel
The Living Dead by George A. Romero & Daniel Kraus
Depth by Lev AC Rosen (also in Sci-Fi)
The Trees by Ali Shaw (also in fantasy)
The Artful by Wilbert Stanton
Dies the Fire (Emberverse #1) by S.M. Stirling
This Is Not A Test by Courtney Summers*
Darkness Begins (After the EMP #1) by Harley Tate
Darkness Grows (After the EMP #2) by Harley Tate
Darkness Rises (After the EMP #3) by Harley Tate
Chaos Comes (After the EMP #4) by Harley Tate
Chaos Gains (After the EMP #5) by Harley Tate
Chaos Evolves (After the EMP #6) by Harley Tate
Hope Sparks (After the EMP #7) by Harley Tate
Brace for Impact (‘Southern Grit’ series #1) by Harley Tate
Escape the Fall (‘Southern Grit’ series #2) by Harley Tate
Survive the Panic (‘Southern Grit’ series #3) by Harley Tate
Surviving the Evacuation: London: Book One by Frank Tayell
Surviving the Evacuation: Family: Book Three by Frank Tayell
Rise Again, A Zombie Thriller by Ben Tripp*
Bannerless by Carrie Vaughn
The Wild Dead (Bannerless Saga #2) by Carrie Vaughn
Positive by David Wellington
The Death Doll by Brian P. White
Zone One by Colson Whitehead*
The Day of the Triffids by John Wyndham
Blood Red Road (Dust Lands #1) by Moira Young
book reviews forevermore 
I wish you had a section for sci-fi. Especially apocalypse sci-fi
Your wish is my command! I was answering a similar question on GR and starting making an exhaustive apocalypse list. Thank you! I seem to have some trouble with the pages but here is where it is at at the moment. https://wordpress.com/page/clsiewert.wordpress.com/8263