Cardinals Roster & Staff
Transactions
| Date | Transaction |
| 06/30/19 | St. Louis Cardinals signed free agent RHP John Witkowski to a minor league contract. |
| 06/29/19 | St. Louis Cardinals signed free agent SS Shane Benes to a minor league contract. |
| 06/29/19 | St. Louis Cardinals placed RHP John Brebbia on the paternity list. |
| 06/29/19 | St. Louis Cardinals recalled Lane Thomas from Memphis Redbirds. |
| 06/29/19 | St. Louis Cardinals recalled LF Tyler O'Neill from Memphis Redbirds. |
| 06/29/19 | St. Louis Cardinals placed LF Marcell Ozuna on the 10-day injured list. Right middle finger fracture. |
| 06/26/19 | St. Louis Cardinals sent RHP Mike Mayers on a rehab assignment to Memphis Redbirds. |
| 06/26/19 | St. Louis Cardinals sent RHP Ryan Helsley on a rehab assignment to Memphis Redbirds. |
| 06/25/19 | St. Louis Cardinals optioned LHP Genesis Cabrera to Memphis Redbirds. |
| 06/25/19 | St. Louis Cardinals placed RHP Jordan Hicks on the 10-day injured list retroactive to June 23, 2019. Torn UCL in right elbow. |
| 06/25/19 | St. Louis Cardinals recalled Dominic Leone from Memphis Redbirds. |
| 06/25/19 | St. Louis Cardinals recalled Daniel Ponce de Leon from Memphis Redbirds. |
| 06/24/19 | St. Louis Cardinals optioned LHP Genesis Cabrera to Memphis Redbirds. |
| 06/23/19 | St. Louis Cardinals signed C Zade Richardson. |
| 06/23/19 | St. Louis Cardinals signed OF Patrick Romeri. |
| 06/23/19 | St. Louis Cardinals signed RHP Tyler Statler. |
| 06/23/19 | St. Louis Cardinals signed RHP Anthony Green. |
| 06/23/19 | St. Louis Cardinals signed RHP Thomas Hart. |
| 06/21/19 | St. Louis Cardinals signed LHP Connor Thomas. |
| 06/21/19 | St. Louis Cardinals optioned 1B Rangel Ravelo to Memphis Redbirds. |
| 06/21/19 | St. Louis Cardinals signed RHP Eric Lex. |
| 06/21/19 | St. Louis Cardinals signed RHP Connor Lunn. |
| 06/21/19 | St. Louis Cardinals activated 2B Yairo Munoz from the restricted list. |
| 06/20/19 | St. Louis Cardinals activated RHP Adam Wainwright from the 10-day injured list. |
| 06/20/19 | St. Louis Cardinals optioned RHP Daniel Ponce de Leon to Memphis Redbirds. |
| 06/20/19 | St. Louis Cardinals placed 2B Yairo Munoz on the restricted list. |
| 06/19/19 | St. Louis Cardinals signed LHP Jack Ralston. |
| 06/19/19 | St. Louis Cardinals signed RHP Andre Pallante. |
| 06/17/19 | St. Louis Cardinals signed RHP Michael YaSenka. |
| 06/17/19 | St. Louis Cardinals signed SS Ben Baird. |
| 06/17/19 | St. Louis Cardinals signed C Kyle Skeels. |
| 06/17/19 | St. Louis Cardinals signed OF Todd Lott. |
| 06/17/19 | St. Louis Cardinals signed 2B Chandler Redmond. |
| 06/17/19 | St. Louis Cardinals signed OF David Vinsky. |
| 06/17/19 | St. Louis Cardinals transferred RHP Mike Mayers from the 10-day injured list to the 60-day injured list. Right shoulder lat strain. |
| 06/17/19 | St. Louis Cardinals signed RHP Cameron Dulle. |
| 06/17/19 | St. Louis Cardinals selected the contract of Rangel Ravelo from Memphis Redbirds. |
| 06/17/19 | St. Louis Cardinals placed 2B Yairo Munoz on the paternity list. |
| 06/17/19 | St. Louis Cardinals signed RHP Jake Sommers. |
| 06/17/19 | St. Louis Cardinals signed free agent RHP Dalton Roach to a minor league contract. |
| 06/17/19 | St. Louis Cardinals signed RHP Dylan Pearce. |
| 06/17/19 | St. Louis Cardinals signed RHP Will Guay. |
| 06/14/19 | St. Louis Cardinals signed RHP Logan Gragg. |
| 06/14/19 | St. Louis Cardinals signed free agent RHP Juan Peralta to a minor league contract. |
| 06/13/19 | St. Louis Cardinals placed RHP Ryan Helsley on the 10-day injured list. Right shoulder impingement. |
| 06/13/19 | St. Louis Cardinals recalled Genesis Cabrera from Memphis Redbirds. |
| 06/12/19 | St. Louis Cardinals signed CF Trejyn Fletcher. |
| 06/12/19 | St. Louis Cardinals signed RHP Tyler Peck. |
| 06/12/19 | St. Louis Cardinals signed C Pedro Pages. |
| 06/12/19 | St. Louis Cardinals signed C Aaron Antonini. |
| 06/12/19 | St. Louis Cardinals signed RHP Adrian Mardueno. |
| 06/12/19 | St. Louis Cardinals signed RHP Tony Locey. |
| 06/11/19 | St. Louis Cardinals optioned C Andrew Knizner to Memphis Redbirds. |
| 06/11/19 | St. Louis Cardinals signed LHP Zack Thompson. |
| 06/11/19 | St. Louis Cardinals signed RHP Scott Politz. |
| 06/11/19 | St. Louis Cardinals signed RHP Jeremy Randolph. |
| 06/11/19 | St. Louis Cardinals signed 3B Brylie Ware. |
| 06/11/19 | St. Louis Cardinals activated C Yadier Molina from the 10-day injured list. |
| 06/10/19 | St. Louis Cardinals placed RHP Adam Wainwright on the 10-day injured list. Left hamstring strain. |
| 06/10/19 | St. Louis Cardinals recalled RHP Ryan Helsley from Memphis Redbirds. |
| 06/10/19 | St. Louis Cardinals sent RHP Merandy Gonzalez outright to Springfield Cardinals. |
| 06/09/19 | St. Louis Cardinals optioned RHP Ryan Helsley to Memphis Redbirds. |
| 06/09/19 | St. Louis Cardinals recalled Daniel Ponce de Leon from Memphis Redbirds. |
| 06/08/19 | St. Louis Cardinals placed 3B Jedd Gyorko on the 10-day injured list. Lower back strain. |
| 06/08/19 | St. Louis Cardinals designated RHP Merandy Gonzalez for assignment. |
| 06/08/19 | St. Louis Cardinals selected the contract of SS Tommy Edman, , , , and. |
| 06/08/19 | St. Louis Cardinals selected the contract of SS Tommy Edman. |
| 06/08/19 | St. Louis Cardinals selected the contract of SS Tommy Edman from Memphis Redbirds. |
| 06/08/19 | St. Louis Cardinals selected the contract of SS Tommy Edman. |
| 06/05/19 | St. Louis Cardinals recalled Ryan Helsley from Memphis Redbirds. |
| 06/05/19 | St. Louis Cardinals optioned LHP Genesis Cabrera to Memphis Redbirds. |