Orioles Roster & Staff
Transactions
| Date | Transaction |
| 09/30/11 | Dylan Bundy roster status changed by Baltimore Orioles. |
| 09/29/11 | Chris Tillman roster status changed by Baltimore Orioles. |
| 09/29/11 | Baltimore Orioles activated LHP Pedro Viola. |
| 09/29/11 | Baltimore Orioles activated SS Cesar Izturis from the 15-day disabled list. |
| 09/29/11 | Joe Mahoney roster status changed by Baltimore Orioles. |
| 09/29/11 | Brandon Snyder roster status changed by Baltimore Orioles. |
| 09/23/11 | Baltimore Orioles activated LHP Troy Patton from the restricted list. |
| 09/22/11 | Baltimore Orioles placed LHP Troy Patton on the restricted list. |
| 09/12/11 | Baltimore Orioles released LHP Mark Hendrickson. |
| 09/12/11 | Jason Berken roster status changed by Baltimore Orioles. |
| 09/08/11 | Baltimore Orioles sent Blake Davis outright to Norfolk Tides. |
| 09/08/11 | Baltimore Orioles signed free agent OF Ivan Mora to a minor league contract. |
| 09/06/11 | Baltimore Orioles activated 1B Chris Davis from the 15-day disabled list. |
| 09/06/11 | Baltimore Orioles selected the contract of LHP Clay Rapada from Norfolk Tides. |
| 09/06/11 | Baltimore Orioles designated LHP Mark Hendrickson for assignment. |
| 09/06/11 | Baltimore Orioles designated Blake Davis for assignment. |
| 09/06/11 | Baltimore Orioles recalled Pedro Florimon from Bowie Baysox. |
| 09/06/11 | Baltimore Orioles selected the contract of Jeremy Accardo from Norfolk Tides. |
| 09/06/11 | Baltimore Orioles recalled Josh Bell from Norfolk Tides. |
| 09/01/11 | Baltimore Orioles selected the contract of Rick van den Hurk from Norfolk Tides. |
| 09/01/11 | Baltimore Orioles claimed RHP Pedro Strop off waivers from Texas Rangers. |
| 09/01/11 | Baltimore Orioles selected the contract of LF Kyle Hudson from Norfolk Tides. |