Cardinals Roster & Staff
Transactions
| Date | Transaction |
| 08/31/23 | St. Louis Cardinals sent RHP Wilking Rodríguez on a rehab assignment to Memphis Redbirds. |
| 08/31/23 | St. Louis Cardinals sent RHP Wilking Rodríguez on a rehab assignment to Memphis Redbirds. |
| 08/30/23 | St. Louis Cardinals sent LF Lars Nootbaar on a rehab assignment to Memphis Redbirds. |
| 08/30/23 | St. Louis Cardinals sent LF Lars Nootbaar on a rehab assignment to Memphis Redbirds. |
| 08/29/23 | St. Louis Cardinals sent RHP Jake Woodford on a rehab assignment to Memphis Redbirds. |
| 08/29/23 | St. Louis Cardinals sent RHP Jake Woodford on a rehab assignment to Memphis Redbirds. |
| 08/29/23 | St. Louis Cardinals sent LHP Matthew Liberatore on a rehab assignment to Memphis Redbirds. |
| 08/29/23 | St. Louis Cardinals sent LHP Matthew Liberatore on a rehab assignment to Memphis Redbirds. |
| 08/28/23 | St. Louis Cardinals activated RHP Drew VerHagen from the bereavement list. |
| 08/28/23 | St. Louis Cardinals optioned RHP James Naile to Memphis Redbirds. |
| 08/27/23 | St. Louis Cardinals sent RHP Ryan Helsley on a rehab assignment to Springfield Cardinals. |
| 08/27/23 | St. Louis Cardinals placed RHP Guillermo Zuñiga on the 15-day injured list retroactive to August 25, 2023. Right forearm strain. |
| 08/27/23 | St. Louis Cardinals sent RHP Ryan Helsley on a rehab assignment to Springfield Cardinals. |
| 08/27/23 | St. Louis Cardinals recalled RHP James Naile from Memphis Redbirds. |
| 08/25/23 | St. Louis Cardinals placed RHP Drew VerHagen on the bereavement list. |
| 08/25/23 | St. Louis Cardinals activated 3B Nolan Gorman from the 10-day injured list. |
| 08/25/23 | St. Louis Cardinals recalled RHP Guillermo Zuñiga from Memphis Redbirds. |
| 08/25/23 | St. Louis Cardinals optioned SS José Fermín to Memphis Redbirds. |
| 08/23/23 | St. Louis Cardinals sent RHP Jake Woodford on a rehab assignment to Springfield Cardinals. |
| 08/23/23 | St. Louis Cardinals sent RHP Jake Woodford on a rehab assignment to Springfield Cardinals. |
| 08/22/23 | St. Louis Cardinals placed LHP Matthew Liberatore on the 15-day injured list retroactive to August 19, 2023. Lower back tightness. |
| 08/22/23 | St. Louis Cardinals selected the contract of RHP Jacob Barnes from Memphis Redbirds. |
| 08/21/23 | St. Louis Cardinals optioned RHP Guillermo Zuñiga to Memphis Redbirds. |
| 08/21/23 | St. Louis Cardinals recalled LHP Drew Rom from Memphis Redbirds. |
| 08/19/23 | St. Louis Cardinals recalled RHP Guillermo Zuñiga from Memphis Redbirds. |
| 08/19/23 | St. Louis Cardinals optioned RHP James Naile to Memphis Redbirds. |
| 08/18/23 | St. Louis Cardinals sent RHP Ryan Helsley on a rehab assignment to Memphis Redbirds. |
| 08/18/23 | St. Louis Cardinals sent RHP Ryan Helsley on a rehab assignment to Memphis Redbirds. |
| 08/18/23 | St. Louis Cardinals placed LF Lars Nootbaar on the 10-day injured list retroactive to August 17, 2023. Lower abdomen contusion. |
| 08/18/23 | St. Louis Cardinals selected the contract of SS Masyn Winn from Memphis Redbirds. |
| 08/17/23 | St. Louis Cardinals sent RHP Jake Woodford on a rehab assignment to Memphis Redbirds. |
| 08/17/23 | St. Louis Cardinals sent RHP Jake Woodford on a rehab assignment to Memphis Redbirds. |
| 08/17/23 | St. Louis Cardinals placed 3B Nolan Gorman on the 10-day injured list retroactive to August 14, 2023. Lower back strain. |
| 08/17/23 | St. Louis Cardinals recalled SS Richie Palacios from Memphis Redbirds. |
| 08/15/23 | St. Louis Cardinals selected the contract of RHP Casey Lawrence from Memphis Redbirds. |
| 08/14/23 | St. Louis Cardinals placed LHP Steven Matz on the 15-day injured list retroactive to August 13, 2023. |
| 08/12/23 | St. Louis Cardinals placed CF Dylan Carlson on the 10-day injured list. |
| 08/12/23 | St. Louis Cardinals recalled 1B Luken Baker from Memphis Redbirds. |
| 08/09/23 | St. Louis Cardinals sent RHP Jake Woodford on a rehab assignment to Springfield Cardinals. |
| 08/09/23 | St. Louis Cardinals sent RHP Jake Woodford on a rehab assignment to Springfield Cardinals. |
| 08/08/23 | St. Louis Cardinals activated RHP Miles Mikolas. |
| 08/06/23 | St. Louis Cardinals sent RHP Ryan Helsley on a rehab assignment to Springfield Cardinals. |
| 08/06/23 | St. Louis Cardinals sent RHP Ryan Helsley on a rehab assignment to Springfield Cardinals. |
| 08/02/23 | RHP Miles Mikolas roster status changed by St. Louis Cardinals. |
| 08/01/23 | St. Louis Cardinals activated SS Tommy Edman from the 10-day injured list. |
| 08/01/23 | St. Louis Cardinals activated LHP John King. |
| 08/01/23 | RHP Zack Showalter roster status changed by St. Louis Cardinals. |
| 08/01/23 | St. Louis Cardinals placed 3B Brendan Donovan on the 10-day injured list. Left elbow strain. |
| 08/01/23 | St. Louis Cardinals traded SS Paul DeJong and cash to Toronto Blue Jays for RHP Matt Svanson. |
| 08/01/23 | St. Louis Cardinals traded SS Paul DeJong and cash to Toronto Blue Jays for RHP Matt Svanson. |
| 08/01/23 | St. Louis Cardinals recalled LHP Andrew Suárez from Memphis Redbirds. |
| 08/01/23 | St. Louis Cardinals recalled SS José Fermín from Memphis Redbirds. |
| 08/01/23 | St. Louis Cardinals traded RHP Jack Flaherty to Baltimore Orioles for 2B César Prieto, LHP Drew Rom and RHP Zack Showalter. |
| 08/01/23 | St. Louis Cardinals traded RHP Jack Flaherty to Baltimore Orioles for 2B César Prieto, LHP Drew Rom and RHP Zack Showalter. |
| 08/01/23 | St. Louis Cardinals traded RHP Jack Flaherty to Baltimore Orioles for 2B César Prieto, LHP Drew Rom and RHP Zack Showalter. |
| 08/01/23 | St. Louis Cardinals traded RHP Jack Flaherty to Baltimore Orioles for 2B César Prieto, LHP Drew Rom and RHP Zack Showalter. |
| 08/01/23 | St. Louis Cardinals recalled RHP James Naile from Memphis Redbirds. |