Nationals Roster & Staff
Transactions
| Date | Transaction |
| 07/15/25 | Washington Nationals signed 1B Hunter Hines. |
| 07/15/25 | Washington Nationals signed RHP Riley Maddox. |
| 07/15/25 | Washington Nationals signed RHP Julian Tonghini. |
| 07/15/25 | Washington Nationals signed 3B Wyatt Henseler. |
| 07/15/25 | Washington Nationals signed C Boston Smith. |
| 07/13/25 | Washington Nationals recalled RHP Andry Lara from Harrisburg Senators. |
| 07/13/25 | Washington Nationals optioned LHP Shinnosuke Ogasawara to Rochester Red Wings. |
| 07/08/25 | Washington Nationals transferred RHP Trevor Williams from the 15-day injured list to the 60-day injured list. Right elbow sprain. |
| 07/08/25 | Washington Nationals sent RHP Orlando Ribalta on a rehab assignment to Harrisburg Senators. |
| 07/08/25 | Washington Nationals placed C Keibert Ruiz on the 7-day injured list retroactive to July 6, 2025. |
| 07/08/25 | Washington Nationals signed free agent RHP Luis García. |
| 07/08/25 | Washington Nationals sent RHP Orlando Ribalta on a rehab assignment to Harrisburg Senators. |
| 07/08/25 | Washington Nationals recalled C Drew Millas from Rochester Red Wings. |
| 07/08/25 | Washington Nationals optioned RHP Eduardo Salazar to Rochester Red Wings. |
| 07/06/25 | Washington Nationals recalled LHP Shinnosuke Ogasawara from Rochester Red Wings. |
| 07/06/25 | Washington Nationals optioned RHP Ryan Loutos to Rochester Red Wings. |
| 07/05/25 | Washington Nationals signed free agent RHP Ranger Sarit to a minor league contract. |
| 07/05/25 | Washington Nationals activated RHP Mason Thompson from the 60-day injured list. |
| 07/05/25 | Washington Nationals placed RHP Derek Law on the 60-day injured list. Right forearm Inflammation. |
| 07/05/25 | Washington Nationals optioned RHP Zach Brzykcy to Rochester Red Wings. |
| 07/04/25 | Washington Nationals placed RHP Trevor Williams on the 15-day injured list. Right elbow sprain. |
| 07/04/25 | Washington Nationals activated C Keibert Ruiz from the 10-day injured list. |
| 07/04/25 | Washington Nationals recalled RHP Ryan Loutos from Rochester Red Wings. |
| 07/04/25 | Washington Nationals optioned C Drew Millas to Rochester Red Wings. |
| 07/03/25 | Washington Nationals activated LHP Andrew Chafin from the 15-day injured list. |
| 07/03/25 | Washington Nationals signed free agent C Francisco Mejía to a minor league contract. |
| 07/03/25 | Washington Nationals optioned RHP Ryan Loutos to Rochester Red Wings. |
| 07/03/25 | Washington Nationals optioned RHP Andry Lara to Harrisburg Senators. |
| 07/02/25 | Washington Nationals sent RHP Mason Thompson on a rehab assignment to Rochester Red Wings. |
| 07/02/25 | Washington Nationals recalled RHP Andry Lara from Harrisburg Senators. |
| 07/01/25 | Washington Nationals activated 3B Paul DeJong from the 10-day injured list. |
| 07/01/25 | Washington Nationals optioned 1B Andrés Chaparro to Rochester Red Wings. |