Cardinals Roster & Staff
Transactions
| Date | Transaction |
| 08/31/12 | St. Louis Cardinals recalled Pete Kozma from Memphis Redbirds. |
| 08/31/12 | St. Louis Cardinals placed SS Rafael Furcal on the 15-day disabled list. Right elbow strain. |
| 08/29/12 | St. Louis Cardinals optioned Brandon Dickson to Memphis Redbirds. |
| 08/29/12 | St. Louis Cardinals optioned Ryan Jackson to Memphis Redbirds. |
| 08/29/12 | St. Louis Cardinals recalled Trevor Rosenthal from Memphis Redbirds. |
| 08/29/12 | St. Louis Cardinals recalled Bryan Anderson from Memphis Redbirds. |
| 08/24/12 | St. Louis Cardinals recalled Brandon Dickson from Memphis Redbirds. |
| 08/24/12 | St. Louis Cardinals optioned Barret Browning to Memphis Redbirds. |
| 08/19/12 | St. Louis Cardinals optioned Trevor Rosenthal to Memphis Redbirds. |
| 08/19/12 | St. Louis Cardinals activated LHP Jaime Garcia from the 60-day disabled list. |
| 08/17/12 | St. Louis Cardinals released 1B Mark Hamilton. |
| 08/17/12 | St. Louis Cardinals signed free agent LF Matt Young to a minor league contract. |
| 08/14/12 | St. Louis Cardinals recalled Trevor Rosenthal from Memphis Redbirds. |
| 08/14/12 | St. Louis Cardinals placed LHP Brian Fuentes on the restricted list. |
| 08/14/12 | St. Louis Cardinals signed free agent 1B Brock Peterson to a minor league contract. |
| 08/13/12 | St. Louis Cardinals signed free agent OF Magneuris Sierra to a minor league contract. |
| 08/10/12 | St. Louis Cardinals selected the contract of Ryan Jackson from Memphis Redbirds. |
| 08/10/12 | St. Louis Cardinals signed free agent 2B Lance Zawadzki to a minor league contract. |
| 08/09/12 | St. Louis Cardinals traded 2B Tyler Greene to Houston Astros. |
| 08/05/12 | St. Louis Cardinals signed free agent OF Raymond Kruml to a minor league contract. |
| 08/03/12 | St. Louis Cardinals placed 1B Lance Berkman on the 15-day disabled list. Right knee inflammation. |
| 08/03/12 | St. Louis Cardinals recalled RF Shane Robinson from Memphis Redbirds. |
| 08/01/12 | St. Louis Cardinals optioned Trevor Rosenthal to Memphis Redbirds. |
| 08/01/12 | St. Louis Cardinals activated RHP Edward Mujica. |