There are 13 series with the name: The Guardian
The Guardian Books in Order
Books by Karen Robards1. The Ultimatum (2017)
2. The Moscow Deception (2018)
3. The Fifth Doctrine (2019)
The Guardians Books in Order
Books by JJ King1. Blood of Eden (2016)
2. My Brother's Keeper (2016)
3. Sins of the Father (2017)
Elite Guardians Books in Order
Books by Lynette Eason1. Always Watching (2016)
2. Without Warning (2016)
3. Moving Target (2017)
4. Chasing Secrets (2017)
Global Guardians Books in Order
Books by Susan May Warren1. Watch Over Me (2020)
2. Never Say Goodbye (2020)
3. Run to You (2020)
Coastal Guardians Books in Order
Books by Dani Pettrey1. The Killing Tide (2019)
2. The Crushing Depths (2020)
The Stone Guardians Books in Order
Books by Kindrie Grove1. The Messenger from Myris Dar (2018)
2. Remembering (2020)
Days of the Guardian Books in Order
Books by D.Marie Prokop and Others1. The Red String (2013)
2. The Red Cloak (2014)
3. The Red Knot (2015)
The Guardians Trilogy Books in Order
Books by Nora Roberts1. Stars of Fortune (2015)
2. Bay of Sighs (2016)
3. Island of Glass (2016)
Lantern Beach Guardians Books in Order
Books by Christy Barritt1. Hide and Seek (2021)
2. Shock and Awe (2021)
3. Safe and Sound (2021)
The Guardian Herd Series Books in Order
Books by Jennifer Lynn Alvarez2. The Guardian Herd: Stormbound (2015)
4. The Guardian Herd: Windborn (2016)
The Guardians of the Flame Books in Order
Books by Joel Rosenberg1. The Sleeping Dragon (1988)
2. The Sword and the Chain (1988)
3. The Silver Crown (1989)
4. The Heir Apparent (1989)
5. The Warrior Lives (1988)
6. The Road to Ehvenor (1991)
Samantha Moon, Guardian Vampire Books in Order
Books by Crystal-Rain Love1. Twisted Sister (2020)
2. Harvest Moon (2020)
3. Moonbow (2020)