Dictionary dot com defines apocalypse as:

a prophetic revelation, especially concerning a cataclysm in which the forces of good permanently triumph over the forces of evil.
And

any universal or widespread destruction or disaster

As a subgenre of speculative fiction, apocalyptic novels detail the events leading up to and consuming the end of civilization as we know it. Sub-subgenre of apocalyptic fiction include cataclysm by aliens, cataclysm by comet or other space material, cataclysm by war, cataclysm by natural disaster, cataclysm by pandemic plagues, cataclysm by loss of technology (the grid finally fails), cataclysm – well, you get the idea. These tend to make thrilling movies.

Post-apocalyptic fiction are tales which begin after the apocalypse has settled. These are generally stories about beginning again and triumphing over utter chaos and despair. My absolute favorite post-apocalyptic science fiction is Alas, Babylon by Pat Frank.

A popular subgenre, Goodreads lists over nine thousand apocalyptic fictions in print today. Here are a few which might interest you:

Alas, Babylon
By Pat Frank
ISBN 860-1300041667 ASIN B00CD360ZQ published 1965

The Stand
By Stephen King
ISBN 978-0307947307 ASIN B001C4NXKM published 1978

Red Alert
By Peter Bryant
ASIN B003XVYLA8 published 1958

Earth Abides
by George R. Stewart
ISBN 978-0345487131 ASIN B0042JSMQ4 published 2006

Lucifer's Hammer
By Larry Niven and Jerry Pournelle
ISBN 978-0449208137 ASIN B004478DOU published 1985

The Road
by Cormac McCarthy
NATIONAL BESTSELLER
PULITZER PRIZE WINNER
National Book Critics Circle Award Finalist
A New York Times Notable Book
ISBN 978-0307387899 ASIN B000OI0G1Q published 2006



The Andromeda Strain
by Michael Crichton
ISBN 978-0061703157 ASIN B007UH4EPS published 1969

Prodigy (Legend, #2)
by Marie Lu
ISBN 978-0399256769 ASIN B0087GIUTM published 2013

The Zombie Survival Guide: Complete Protection from the Living Dead
by Max Brooks
ISBN 978-1400049622 ASIN B000FBJAOG published 2003

Enclave (Razorland Trilogy)
by Ann Aguirre
ISBN 978-0312551377 ASIN B004H1TC9S published 2011

Incarceron (Incarceron, #1)
by Catherine Fisher
ASIN B00JZRWCEQ published 2007

Apocalyptic Swing Poems
by Gabrielle Calvocoressi
ISBN 978-0892554126 published 2009

Brave New World
by Aldous Huxley
ISBN 978-0060850524 published 1932

Ender's Game
by Orson Scott Card
ISBN 978-0812550702 ASIN B003G4W49C published 1985

Broken Lines- A Tale Of Survival In A Powerless World
By James Hunt
ASIN: B00N3N20UO Published 2014

The Waste Lands (The Dark Tower, #3)
by Stephen King , Ned Dameron (Illustrator)
ISBN 978-0451210869 ASIN B000PC721I published 1991

Wizard and Glass (The Dark Tower, #4)
by Stephen King , Dave McKean (Illustrator)
ISBN 978-0451210876 ASIN B000OCXIMG published 1997

The Forever War (The Forever War, #1)
by Joe Haldeman
ISBN 978-0918348951published 1974

The Walking Dead, Compendium 1
by Robert Kirkman
ISBN 978-1607060765published 2009

A Canticle for Leibowitz (St. Leibowitz, #1)
by Walter M. Miller Jr., Mary Doria Russell (Introduction)
ASIN B000OP2EM8 published 1959

The Stand: Soul Survivors
by Roberto Aguirre-Sacasa (Adaptor), Mike Perkins (Illustrator), Laura Martin (Illustrator)
ASIN B002T6QBME published 2010

Station Eleven
by Emily St. John Mandel
2014 National Book Award Finalist
A New York Times Bestseller
ISBN 978-0385353304 ASIN B00J1IQUYM published 2014

Feed (Newsflesh Trilogy, #1)
by Mira Grant
ISBN 978-0316081054 ASIN B003GFIVSE published 2010

Fever (The Chemical Garden, #2)
by Lauren DeStefano
ISBN 978-1442409088 ASIN B0055OJCUU published 2012

The Adoration of Jenna Fox (Jenna Fox Chronicles, #1)
by Mary E. Pearson
ISBN 978-0805076684 ASIN B0015DRQ1W published 2008

Shift (Silo, #2)
by Hugh Howey
ISBN 978-1481983556 ASIN B00B6Z6HI2 published 2013

The Dog Stars
by Peter Heller
ISBN 978-0307950475 ASIN B007GZELF2 published 2012

Eve (Eve, #1)
by Anna Carey
ISBN 978-0062048509 ASIN B004W2YYRM published 2011