D-backs Roster & Staff
Transactions
| Date | Transaction |
| 01/15/26 | Arizona Diamondbacks signed free agent OF Manny Almonte to a minor league contract. |
| 01/15/26 | Arizona Diamondbacks signed free agent SS Ruben Gallego to a minor league contract. |
| 01/15/26 | Arizona Diamondbacks signed free agent SS Brayan Figueroa to a minor league contract. |
| 01/15/26 | Arizona Diamondbacks signed free agent RHP Diland Cepeda to a minor league contract. |
| 01/15/26 | Arizona Diamondbacks signed free agent C Jesus Linares to a minor league contract. |
| 01/15/26 | Arizona Diamondbacks signed free agent RHP Taylor Clarke. |
| 01/15/26 | Arizona Diamondbacks signed free agent OF Joscar Hernandez to a minor league contract. |
| 01/15/26 | Arizona Diamondbacks designated RHP Gus Varland for assignment. |
| 01/15/26 | Arizona Diamondbacks signed free agent OF Yamir Mendieta to a minor league contract. |
| 01/15/26 | Arizona Diamondbacks signed free agent OF Loidel Amaya to a minor league contract. |
| 01/15/26 | Arizona Diamondbacks signed free agent OF Jossiel Feliz to a minor league contract. |
| 01/15/26 | Arizona Diamondbacks signed free agent OF Jeremy Suriel to a minor league contract. |
| 01/15/26 | Arizona Diamondbacks signed free agent OF Yohendi Hernandez to a minor league contract. |
| 01/15/26 | Arizona Diamondbacks signed free agent OF D-Shawn Martina to a minor league contract. |
| 01/15/26 | Arizona Diamondbacks signed free agent RHP Hector Ozuna to a minor league contract. |
| 01/15/26 | Arizona Diamondbacks signed free agent SS Leonardo Sevilla to a minor league contract. |
| 01/15/26 | Arizona Diamondbacks signed free agent C Sebastian Mireles to a minor league contract. |
| 01/15/26 | Arizona Diamondbacks signed free agent SS Jorge Silvera to a minor league contract. |
| 01/15/26 | Arizona Diamondbacks signed free agent C Angel Chacon to a minor league contract. |
| 01/15/26 | Arizona Diamondbacks signed free agent RHP Isaac Mendez to a minor league contract. |
| 01/15/26 | Arizona Diamondbacks signed free agent RHP Yohansis Pena to a minor league contract. |
| 01/15/26 | Arizona Diamondbacks signed free agent C Jhosep Villarroel to a minor league contract. |
| 01/13/26 | 1B Tyler Locklear changed number to 31. |
| 01/13/26 | St. Louis Cardinals traded 3B Nolan Arenado and cash to Arizona Diamondbacks for RHP Jack Martinez. |
| 01/13/26 | St. Louis Cardinals traded 3B Nolan Arenado and cash to Arizona Diamondbacks for RHP Jack Martinez. |
| 01/10/26 | RHP Josh Grosz roster status changed by Arizona Diamondbacks. |
| 01/10/26 | Arizona Diamondbacks traded CF Jake McCarthy to Colorado Rockies for RHP Josh Grosz. |
| 01/10/26 | Arizona Diamondbacks traded CF Jake McCarthy to Colorado Rockies for RHP Josh Grosz. |
| 01/07/26 | Arizona Diamondbacks signed free agent 1B Luken Baker to a minor league contract. |
| 01/07/26 | Arizona Diamondbacks signed free agent RHP Thomas Hatch to a minor league contract. |