Mark Greaney has published 26 novels and 1 other book, beginning with The Gray Man (2009). The 2 series include The Gray Man (15 books, starting with The Gray Man) and Ryanverse (4 books, starting with Support and Defend). 4 feature Jack Ryan. The latest is Midnight Black (2025), and Dark Union is due 2027.
Updated September 2026
Upcoming Mark Greaney books
Dark Union (2027, upcoming)
The Gray Man books in order (15)Series page
Reading order: 1 The Gray Man (2009) · 2 On Target (2012) · 3 Ballistic (2011) · 4 Dead Eye (2013) · 5 Back Blast (2016) · 6 Gunmetal Gray (2018) · 7 Agent in Place (2018) · 8 Mission Critical (2019) · 9 One Minute Out (2020) · 10 Relentless (2021) · … all 15 below
- 1.
The Gray Man (2009)
- 2.
On Target (2012)
- 3.
Ballistic (2011)
- 4.
Dead Eye (2013)
- 5.
Back Blast (2016)
- 6.
Gunmetal Gray (2018)
- 7.
Agent in Place (2018)
- 8.
Mission Critical (2019)
- 9.
One Minute Out (2020)
- 10.
Relentless (2021)
- 11.
Sierra Six (2022)
- 12.
Burner (2023)
- 13.
Chaos Agent (2024)
- 14.
Midnight Black (2025)
- 15.
The Hard Line (Feb 2026)
Ryanverse books in order (4)Series page
Reading order: 17 Support and Defend (2014) · 18 Full Force and Effect (2014) · 20 Commander in Chief (2015) · 22 True Faith and Allegiance (2016)
- 17.
Support and Defend (Jul 2014)
- 18.
Full Force and Effect (Dec 2014)
- 20.
Commander in Chief (Dec 2015)
- 22.
True Faith and Allegiance (2016)
Where to start with Mark Greaney
Start here
The Gray Man
Mark Greaney's most-read book and the first of the 15 The Gray Man books.
Newest
Midnight Black
Published 2025.
Standalone novels in order
Tom Clancy Support and Defend (2014)
Red Metal (2019)
Armored (2022)
Sentinel (2024)
Film and TV adaptations
- The Gray Man (2022)Film · from The Gray Man
About Mark Greaney
Mark Greaney is an American author. He is known for his Gray Man series of action thriller novels, which feature assassin and CIA operative Court Gentry. Greaney is also known for co-authoring Tom Clancy’s final works and for continuing the Ryanverse after his death in 2013 and until 2017.
Biography from Wikipedia, CC BY-SA 4.0. Photo via Wikimedia Commons.
Mark Greaney FAQ
- How many books has Mark Greaney written?
- Mark Greaney has published 26 novels and 1 other book that we list, as of September 2026.
- What order should I read Mark Greaney's books in?
- Read each series in its own order: start The Gray Man with The Gray Man and Ryanverse with Support and Defend. The other books stand alone and can be read in any order.
- What is Mark Greaney's latest book?
- Midnight Black (2025). The next one, Dark Union, is due 2027.
- What is Mark Greaney's most famous book?
- The Gray Man (2009) is Mark Greaney's most widely read book.
- Are Mark Greaney's books connected?
- 19 books belong to 2 series (The Gray Man and Ryanverse); the other 8 books stand alone.
- Which Mark Greaney books have been adapted?
- 1 book has been adapted for film or TV, including The Gray Man (film, 2022).
Authors like Mark Greaney
Sources: book lists and dates from Wikidata and Open Library, ratings from Open Library readers. Last updated September 2026.