Astros Roster & Staff
Transactions
| Date | Transaction |
| 09/29/23 | Houston Astros placed RHP Ryne Stanek on the paternity list. |
| 09/29/23 | Houston Astros placed RHP Ryne Stanek on the paternity list. |
| 09/29/23 | Houston Astros recalled RHP Seth Martinez from Sugar Land Space Cowboys. |
| 09/22/23 | Houston Astros activated RHP Ryne Stanek from the 15-day injured list. |
| 09/22/23 | Houston Astros optioned RHP Joel Kuhnel to Sugar Land Space Cowboys. |
| 09/21/23 | Houston Astros signed free agent RHP Marcos Henriquez to a minor league contract. |
| 09/19/23 | Houston Astros sent RHP Ryne Stanek on a rehab assignment to Sugar Land Space Cowboys. |
| 09/14/23 | Houston Astros activated LHP Bennett Sousa. |
| 09/14/23 | Houston Astros optioned LHP Parker Mushinski to Sugar Land Space Cowboys. |
| 09/14/23 | Houston Astros recalled LHP Bennett Sousa from Sugar Land Space Cowboys. |
| 09/05/23 | Houston Astros placed RHP Ryne Stanek on the 15-day injured list. Right ankle sprain. |
| 09/05/23 | Houston Astros sent 3B Rylan Bannon outright to Sugar Land Space Cowboys. |
| 09/05/23 | Houston Astros recalled LHP Parker Mushinski from Sugar Land Space Cowboys. |
| 09/03/23 | Houston Astros designated 3B Rylan Bannon for assignment. |
| 09/03/23 | Houston Astros claimed LHP Bennett Sousa off waivers from Detroit Tigers. |
| 09/01/23 | Houston Astros activated SS Grae Kessinger from the 10-day injured list. |
| 09/01/23 | Houston Astros sent RHP Jake Cousins outright to Sugar Land Space Cowboys. |
| 09/01/23 | Houston Astros recalled RHP Joel Kuhnel from Sugar Land Space Cowboys. |