Cardinals Roster & Staff
Transactions
| Date | Transaction |
| 06/30/17 | St. Louis Cardinals sent LHP Zach Duke on a rehab assignment to GCL Cardinals. |
| 06/29/17 | St. Louis Cardinals signed C Zach Jackson. |
| 06/28/17 | St. Louis Cardinals transferred RHP Alex Reyes from the 10-day disabled list to the 60-day disabled list. |
| 06/28/17 | St. Louis Cardinals optioned SS Aledmys Diaz to Memphis Redbirds. |
| 06/28/17 | St. Louis Cardinals signed OF Scott Hurst. |
| 06/28/17 | St. Louis Cardinals selected the contract of Alex Mejia from Memphis Redbirds. |
| 06/27/17 | St. Louis Cardinals signed free agent 1B John Nogowski to a minor league contract. |
| 06/27/17 | St. Louis Cardinals signed free agent RHP Jim Voyles to a minor league contract. |
| 06/26/17 | St. Louis Cardinals signed RHP Alex Gallegos. |
| 06/25/17 | St. Louis Cardinals recalled Mike Mayers from Memphis Redbirds. |
| 06/25/17 | St. Louis Cardinals placed CF Dexter Fowler on the 10-day disabled list. Right heel spur. |
| 06/25/17 | St. Louis Cardinals selected the contract of Luke Voit from Memphis Redbirds. |
| 06/25/17 | St. Louis Cardinals optioned 1B Chad Huffman to Memphis Redbirds. |
| 06/25/17 | St. Louis Cardinals recalled LF Randal Grichuk from Memphis Redbirds. |
| 06/25/17 | St. Louis Cardinals signed SS Taylor Bryant. |
| 06/25/17 | St. Louis Cardinals placed LHP Kevin Siegrist on the 10-day disabled list retroactive to June 23, 2017. Cervical spine sprain. |
| 06/23/17 | St. Louis Cardinals signed free agent LHP Austin Warner to a minor league contract. |
| 06/22/17 | St. Louis Cardinals signed RHP Cory Malcom. |
| 06/22/17 | St. Louis Cardinals signed RHP Alex Fagalde. |
| 06/22/17 | St. Louis Cardinals signed C Robbie Coman. |
| 06/22/17 | St. Louis Cardinals signed LHP Andrew Summerville. |
| 06/22/17 | St. Louis Cardinals signed OF Terry Fuller. |
| 06/22/17 | St. Louis Cardinals signed CF Chase Pinder. |
| 06/21/17 | St. Louis Cardinals signed free agent RHP Gabriel Gentner to a minor league contract. |
| 06/20/17 | St. Louis Cardinals signed RHP Christopher Hunt. |
| 06/20/17 | St. Louis Cardinals signed free agent C Joe Gomez to a minor league contract. |
| 06/20/17 | St. Louis Cardinals signed 2B Zach Kirtley. |
| 06/20/17 | St. Louis Cardinals signed LHP Jake Dahlberg. |
| 06/20/17 | St. Louis Cardinals signed LHP Jake Dahlberg. |
| 06/20/17 | St. Louis Cardinals signed RHP C.J. Saylor. |
| 06/20/17 | St. Louis Cardinals signed RHP Kevin Hamann. |
| 06/20/17 | St. Louis Cardinals signed C Cameron Knight. |
| 06/20/17 | St. Louis Cardinals signed RHP Kodi Whitley. |
| 06/19/17 | St. Louis Cardinals signed SS Michael Brdar. |
| 06/19/17 | St. Louis Cardinals signed RHP Jake Walsh. |
| 06/19/17 | St. Louis Cardinals signed LHP Evan Kruczynski. |
| 06/19/17 | St. Louis Cardinals signed RHP Evan Guillory. |
| 06/19/17 | St. Louis Cardinals signed LHP Patrick Dayton. |
| 06/19/17 | St. Louis Cardinals signed RHP Thomas St. Clair. |
| 06/19/17 | St. Louis Cardinals signed 2B Wood Myers. |
| 06/19/17 | St. Louis Cardinals signed 2B Irving Lopez. |
| 06/19/17 | St. Louis Cardinals signed LHP Brett Seeburger. |
| 06/18/17 | St. Louis Cardinals signed RHP Paul Balestrieri. |
| 06/18/17 | St. Louis Cardinals signed LHP Jacob Patterson. |
| 06/18/17 | St. Louis Cardinals signed OF Brandon Benson. |
| 06/18/17 | St. Louis Cardinals signed RHP Will Latcham. |
| 06/18/17 | St. Louis Cardinals signed OF J.D, Crowe. |
| 06/18/17 | St. Louis Cardinals signed RHP Evan Mendoza. |
| 06/16/17 | Brett Cecil changed number to 27. |
| 06/15/17 | St. Louis Cardinals recalled SS Paul DeJong from Memphis Redbirds. |
| 06/15/17 | St. Louis Cardinals placed 2B Kolten Wong on the 10-day disabled list. Right tricep strain. |
| 06/14/17 | St. Louis Cardinals optioned LHP Marco Gonzales to Memphis Redbirds. |
| 06/13/17 | St. Louis Cardinals recalled Marco Gonzales from Memphis Redbirds. |
| 06/13/17 | St. Louis Cardinals recalled Sam Tuivailala from Memphis Redbirds. |
| 06/13/17 | St. Louis Cardinals released 3B Jhonny Peralta. |
| 06/12/17 | St. Louis Cardinals optioned 3B Paul DeJong to Memphis Redbirds. |
| 06/11/17 | St. Louis Cardinals optioned LHP Sean Gilmartin to Memphis Redbirds. |
| 06/11/17 | St. Louis Cardinals claimed LHP Sean Gilmartin off waivers from New York Mets. |
| 06/09/17 | St. Louis Cardinals activated 2B Kolten Wong from the 10-day disabled list. |
| 06/09/17 | St. Louis Cardinals designated 3B Jhonny Peralta for assignment. |
| 06/07/17 | St. Louis Cardinals selected the contract of Chad Huffman from Memphis Redbirds. |
| 06/07/17 | St. Louis Cardinals optioned RHP John Gant to Memphis Redbirds. |
| 06/07/17 | St. Louis Cardinals signed free agent RHP Hector Mendoza to a minor league contract. |
| 06/06/17 | St. Louis Cardinals sent 2B Kolten Wong on a rehab assignment to Peoria Chiefs. |
| 06/04/17 | St. Louis Cardinals optioned CF Magneuris Sierra to Springfield Cardinals. |
| 06/04/17 | St. Louis Cardinals activated 3B Jedd Gyorko from the paternity list. |
| 06/02/17 | St. Louis Cardinals recalled Magneuris Sierra from Springfield Cardinals. |
| 06/02/17 | St. Louis Cardinals placed 3B Jedd Gyorko on the paternity list. |
| 06/02/17 | St. Louis Cardinals signed free agent RHP Dionis Zamora to a minor league contract. |