D-backs Roster & Staff
Transactions
| Date | Transaction |
| 04/18/26 | Arizona Diamondbacks activated LF Lourdes Gurriel Jr. from the 10-day injured list. |
| 04/18/26 | Arizona Diamondbacks designated 1B Luken Baker for assignment. |
| 04/16/26 | RHP Juan Morillo changed number to 62. |
| 04/16/26 | Arizona Diamondbacks signed free agent SS Andrew Velazquez to a minor league contract. |
| 04/16/26 | RHP Andrew Hoffmann changed number to 56. |
| 04/16/26 | LF Jorge Barrosa changed number to 1. |
| 04/16/26 | RHP Zac Gallen changed number to 23. |
| 04/16/26 | SS Jose Fernandez changed number to 11. |
| 04/16/26 | C Adrian Del Castillo changed number to 25. |
| 04/16/26 | RHP Taylor Clarke changed number to 45. |
| 04/16/26 | RF Corbin Carroll changed number to 7. |
| 04/16/26 | RHP Brandon Pfaadt changed number to 32. |
| 04/16/26 | RHP Ryne Nelson changed number to 19. |
| 04/16/26 | C James McCann changed number to 8. |
| 04/16/26 | 2B Ketel Marte changed number to 4. |
| 04/16/26 | SS Geraldo Perdomo changed number to 2. |
| 04/16/26 | 1B Luken Baker changed number to 21. |
| 04/16/26 | 3B Nolan Arenado changed number to 28. |
| 04/16/26 | 2B Ildemaro Vargas changed number to 6. |
| 04/16/26 | RHP Ryan Thompson changed number to 81. |
| 04/16/26 | RHP Michael Soroka changed number to 34. |
| 04/16/26 | CF Alek Thomas changed number to 5. |
| 04/16/26 | 2B Tim Tawa changed number to 13. |
| 04/16/26 | RHP Paul Sewald changed number to 38. |
| 04/16/26 | RHP Jonathan Loáisiga changed number to 43. |
| 04/16/26 | RHP Merrill Kelly changed number to 29. |
| 04/16/26 | RHP Kevin Ginkel changed number to 37. |
| 04/16/26 | C Aramis Garcia changed number to 35. |
| 04/16/26 | LHP Eduardo Rodriguez changed number to 57. |
| 04/15/26 | LHP Eduardo Rodriguez changed number to 42. |
| 04/15/26 | RHP Zac Gallen changed number to 42. |
| 04/15/26 | SS Jose Fernandez changed number to 42. |
| 04/15/26 | RHP Taylor Clarke changed number to 42. |
| 04/15/26 | CF Alek Thomas changed number to 42. |
| 04/15/26 | 1B Luken Baker changed number to 42. |
| 04/15/26 | Arizona Diamondbacks sent LF Lourdes Gurriel Jr. on a rehab assignment to Amarillo Sod Poodles. |
| 04/15/26 | RHP Michael Soroka changed number to 42. |
| 04/15/26 | RHP Brandon Pfaadt changed number to 42. |
| 04/15/26 | 2B Ildemaro Vargas changed number to 42. |
| 04/15/26 | RHP Andrew Hoffmann changed number to 42. |
| 04/15/26 | 3B Nolan Arenado changed number to 42. |
| 04/15/26 | RHP Paul Sewald changed number to 42. |
| 04/15/26 | C James McCann changed number to 42. |
| 04/15/26 | C Adrian Del Castillo changed number to 42. |
| 04/15/26 | RHP Ryne Nelson changed number to 42. |
| 04/15/26 | RHP Jonathan Loáisiga changed number to 42. |
| 04/15/26 | RHP Kevin Ginkel changed number to 42. |
| 04/15/26 | RF Corbin Carroll changed number to 42. |
| 04/15/26 | 2B Tim Tawa changed number to 42. |
| 04/15/26 | RHP Ryan Thompson changed number to 42. |
| 04/15/26 | RHP Juan Morillo changed number to 42. |
| 04/15/26 | LF Jorge Barrosa changed number to 42. |
| 04/15/26 | C Aramis Garcia changed number to 42. |
| 04/15/26 | RHP Merrill Kelly changed number to 42. |
| 04/15/26 | 2B Ketel Marte changed number to 42. |
| 04/15/26 | SS Geraldo Perdomo changed number to 42. |
| 04/15/26 | Arizona Diamondbacks traded RHP Junior Fernández to Milwaukee Brewers. |
| 04/14/26 | Arizona Diamondbacks placed C Gabriel Moreno on the 10-day injured list retroactive to April 11, 2026. Left oblique strain. |
| 04/14/26 | Arizona Diamondbacks transferred 1B Pavin Smith from the 10-day injured list to the 60-day injured list. Left elbow inflammation. |
| 04/14/26 | Arizona Diamondbacks activated RHP Merrill Kelly from the 15-day injured list. |
| 04/14/26 | Arizona Diamondbacks selected the contract of C Aramis Garcia from Reno Aces. |
| 04/14/26 | Arizona Diamondbacks optioned RHP Taylor Rashi to Reno Aces. |
| 04/09/26 | Arizona Diamondbacks signed free agent RHP Gustavo De La Cruz to a minor league contract. |
| 04/07/26 | Arizona Diamondbacks placed 1B Carlos Santana on the 10-day injured list retroactive to April 6, 2026. Strained right adductor. |
| 04/07/26 | Arizona Diamondbacks signed free agent RHP Joe Ross to a minor league contract. |
| 04/07/26 | Arizona Diamondbacks transferred SS Jordan Lawlar from the 10-day injured list to the 60-day injured list. Right wrist fracture. |
| 04/07/26 | Arizona Diamondbacks selected the contract of 1B Luken Baker from Reno Aces. |
| 04/06/26 | Arizona Diamondbacks signed free agent RHP Blake Cederlind to a minor league contract. |
| 04/05/26 | Arizona Diamondbacks sent RHP Joe Ross outright to Reno Aces. |
| 04/03/26 | Arizona Diamondbacks placed SS Jordan Lawlar on the 10-day injured list. Right wrist fracture. |
| 04/03/26 | Arizona Diamondbacks designated RHP Joe Ross for assignment. |
| 04/03/26 | Arizona Diamondbacks sent RHP Merrill Kelly on a rehab assignment to Reno Aces. |
| 04/03/26 | Arizona Diamondbacks activated C Adrian Del Castillo. |
| 04/03/26 | Arizona Diamondbacks selected the contract of RHP Taylor Rashi from Reno Aces. |
| 04/02/26 | Arizona Diamondbacks reassigned C Adrian Del Castillo to the minor leagues. |
| 04/01/26 | Los Angeles Dodgers claimed RHP Grant Holman off waivers from Arizona Diamondbacks. |