John Corey Series:
1. Raise the Titanic! (1976) - *This was Cussler's first novel, and while it features Dirk Pitt, it is also the first appearance of John Corey.*
2. Mediterranean Caper (1977)
3. The Silent Sea (1978)
4. The Deep Six (1979)
5. Treasure (1981)
6. Iceberg (1982)
7. Vixen 03 (1984)
8. The Serpent (1985)
9. Cyclops (1986)
10. Shock Wave (1987)
11. Night Probe! (1988)
12. Atlantis Found (1989)
13. The Wrecker (1991)
14. The Emperor's Tomb (1992)
15. The Golden Cobra (1993)
16. The Lost City (1994)
17. Raise the Sun! (1995)
18. The Devil's Gate (1996)
19. Sunset, East to West (1997)
20. Black Wind (1998)
21. Sahara (1999)
22. The Pharaoh's Secret (2000)
23. The Mayan Treasure (2001)
24. The Jungle (2002)
25. The Terrorist (2003)
26. The First Command (2004)
27. Skeleton Coast (2005)
28. The Seven Seas (2006)
29. The Navigator (2007)
30. Pirate (2008)
31. The Storm (2009)
32. The Eyes of the Dragon (2010)
33. The Crusader (2011)
34. The Pharaoh's Curse (2012)
35. The Templar Treasure (2013)
36. The Race (2014)
37. The Serpent's Eye (2015)
38. The Kingdom (2016)
39. The Rising Tide (2017)
40. The Medusa's Eye (2018)
41. The Forbidden Sea (2019)
42. The Silent Hour (2020)
43. The Iron Claw (2021)
44. The Guns of Glory (2022)
45. The Fury (2023)
Note:
* While John Corey appears in Raise the Titanic!, he's not the main character.
* Vixen 03 is a short story collection that includes some John Corey stories, but it isn't a full-length novel.
* The Kingdom is the first book in the series written by Jack Du Brul, after Cussler's passing.
* The Rising Tide, The Medusa's Eye, The Forbidden Sea, The Silent Hour, The Iron Claw, The Guns of Glory, and The Fury are all co-written by Jack Du Brul.
I hope this helps you keep track of the John Corey series!