D-backs Roster & Staff
Transactions
| Date | Transaction |
| 01/30/26 | Arizona Diamondbacks invited non-roster 3B Ivan Melendez to spring training. |
| 01/30/26 | Arizona Diamondbacks invited non-roster C Gavin Logan to spring training. |
| 01/30/26 | Arizona Diamondbacks invited non-roster RHP Landon Sims to spring training. |
| 01/30/26 | Arizona Diamondbacks invited non-roster 2B Cristofer Torin to spring training. |
| 01/30/26 | Arizona Diamondbacks invited non-roster RHP Daniel Eagen to spring training. |
| 01/30/26 | Arizona Diamondbacks invited non-roster LHP Yu-Min Lin to spring training. |
| 01/30/26 | Arizona Diamondbacks invited non-roster 3B Ben McLaughlin to spring training. |
| 01/30/26 | Arizona Diamondbacks invited non-roster RHP Alfred Morillo to spring training. |
| 01/30/26 | Arizona Diamondbacks invited non-roster CF Druw Jones to spring training. |
| 01/30/26 | Arizona Diamondbacks invited non-roster C Aramis Garcia to spring training. |
| 01/30/26 | Arizona Diamondbacks invited non-roster RHP Derek Law to spring training. |
| 01/30/26 | Arizona Diamondbacks invited non-roster RHP Bryce Jarvis to spring training. |
| 01/30/26 | Arizona Diamondbacks invited non-roster RHP Hayden Durke to spring training. |
| 01/30/26 | Arizona Diamondbacks invited non-roster 3B LuJames Groover to spring training. |
| 01/30/26 | Arizona Diamondbacks invited non-roster CF A.J. Vukovich to spring training. |
| 01/30/26 | Arizona Diamondbacks invited non-roster CF Ryan Waldschmidt to spring training. |
| 01/30/26 | Arizona Diamondbacks signed free agent RHP Junior Fernández to a minor league contract and invited him to spring training. |
| 01/30/26 | Arizona Diamondbacks invited non-roster SS Tommy Troy to spring training. |
| 01/30/26 | Arizona Diamondbacks invited non-roster 2B Ildemaro Vargas to spring training. |
| 01/30/26 | Arizona Diamondbacks invited non-roster LHP Spencer Giesting to spring training. |
| 01/30/26 | Arizona Diamondbacks invited non-roster LF Kristian Robinson to spring training. |
| 01/22/26 | Washington Nationals claimed RHP Gus Varland off waivers from Arizona Diamondbacks. |
| 01/20/26 | Arizona Diamondbacks signed free agent RHP Jeyver Manaure 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 Isaac Mendez to a minor league contract. |
| 01/15/26 | Arizona Diamondbacks signed free agent C Jhosep Villarroel to a minor league contract. |
| 01/15/26 | Arizona Diamondbacks signed free agent OF Manny Almonte 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 Yohansis Pena 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 C Sebastian Mireles 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 Jorge Silvera 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 RHP Hector Ozuna 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 Taylor Clarke. |
| 01/15/26 | Arizona Diamondbacks signed free agent OF Joscar Hernandez 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 OF Jossiel Feliz 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 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 Yamir Mendieta to a minor league contract. |
| 01/15/26 | Arizona Diamondbacks signed free agent SS Leonardo Sevilla 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. |
| 01/12/26 | Arizona Diamondbacks signed free agent RHP Jonathan Loáisiga to a minor league contract. |
| 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 RHP Thomas Hatch to a minor league contract. |
| 01/07/26 | RHP Thomas Hatch roster status changed by Arizona Diamondbacks. |
| 01/07/26 | 1B Luken Baker roster status changed by Arizona Diamondbacks. |
| 01/07/26 | Arizona Diamondbacks signed free agent 1B Luken Baker to a minor league contract. |