Royals Roster & Staff
Transactions
| Date | Transaction |
| 06/30/12 | Kansas City Royals recalled Tommy Hottovy from Omaha Storm Chasers. |
| 06/29/12 | Kansas City Royals signed free agent RHP Joe Karlik to a minor league contract. |
| 06/27/12 | Kansas City Royals optioned Francisley Bueno to Omaha Storm Chasers. |
| 06/27/12 | Kansas City Royals recalled Jason Bourgeois from Omaha Storm Chasers. |
| 06/27/12 | Jason Bourgeois roster status changed by Kansas City Royals. |
| 06/27/12 | Kansas City Royals designated C Humberto Quintero for assignment. |
| 06/27/12 | Kansas City Royals recalled Everett Teaford from Omaha Storm Chasers. |
| 06/27/12 | Kansas City Royals signed OF Sam Bates. |
| 06/25/12 | Kansas City Royals sent RHP Roman Colon outright to Omaha Storm Chasers. |
| 06/25/12 | Kansas City Royals signed Juan C Gutierrez. |
| 06/23/12 | Kansas City Royals designated Roman Colon for assignment. |
| 06/23/12 | Kansas City Royals selected the contract of Francisley Bueno from Omaha Storm Chasers. |
| 06/22/12 | Kansas City Royals activated C Salvador Perez from the 60-day disabled list. |
| 06/22/12 | Kansas City Royals optioned Tommy Hottovy to Omaha Storm Chasers. |
| 06/22/12 | Kansas City Royals transferred CF Lorenzo Cain from the 15-day disabled list to the 60-day disabled list. |
| 06/21/12 | Kansas City Royals traded RHP Sean O'Sullivan to Toronto Blue Jays. |
| 06/21/12 | Kansas City Royals signed free agent 1B Matt Fields to a minor league contract. |
| 06/20/12 | Kansas City Royals optioned Louis Coleman to Omaha Storm Chasers. |
| 06/20/12 | Kansas City Royals recalled Irving Falu from Omaha Storm Chasers. |
| 06/20/12 | Joe Lopez assigned to AZL Royals from Kansas City Royals. |
| 06/20/12 | Kansas City Royals signed free agent RHP Jose Geraldo to a minor league contract. |
| 06/20/12 | Alfredo Escalera-Maldonado assigned to AZL Royals from Kansas City Royals. |
| 06/20/12 | OF Marsalis Holloway assigned to AZL Royals from Kansas City Royals. |
| 06/18/12 | Kansas City Royals optioned Nate Adcock to Omaha Storm Chasers. |
| 06/18/12 | Kansas City Royals recalled Tommy Hottovy from Omaha Storm Chasers. |
| 06/18/12 | Kansas City Royals placed 2B Chris Getz on the 15-day disabled list. Lateral strain in his lower left leg. |
| 06/18/12 | Kansas City Royals recalled Louis Coleman from Omaha Storm Chasers. |
| 06/17/12 | Kansas City Royals signed OF Marsalis Holloway. |
| 06/14/12 | Kansas City Royals signed free agent 1B Jared Schlehuber to a minor league contract. |
| 06/14/12 | Kansas City Royals selected the contract of RHP Roman Colon from Omaha Storm Chasers. |
| 06/14/12 | Kansas City Royals transferred LHP Danny Duffy from the 15-day disabled list to the 60-day disabled list. |
| 06/14/12 | Kansas City Royals optioned Clint Robinson to Omaha Storm Chasers. |
| 06/13/12 | Kansas City Royals signed free agent RHP Joe Lopez to a minor league contract. |
| 06/13/12 | Kansas City Royals signed SS Kenny Diekroeger. |
| 06/13/12 | Kansas City Royals activated LHP Jonathan Sanchez from the 15-day disabled list. |
| 06/13/12 | Kansas City Royals optioned Louis Coleman to Omaha Storm Chasers. |
| 06/12/12 | Kansas City Royals activated 2B Chris Getz from the 15-day disabled list. |
| 06/12/12 | Kansas City Royals optioned Johnny Giavotella to Omaha Storm Chasers. |
| 06/12/12 | Kansas City Royals signed LHP Sam Selman. |
| 06/12/12 | Kansas City Royals signed free agent OF Alex Hudak to a minor league contract. |
| 06/12/12 | Kansas City Royals signed RHP Lincoln Rassi. |
| 06/12/12 | Kansas City Royals signed LHP Patrick Conroy. |
| 06/12/12 | Kansas City Royals optioned Everett Teaford to Omaha Storm Chasers. |
| 06/12/12 | Kansas City Royals signed free agent RHP Torey Deshazier to a minor league contract. |
| 06/12/12 | Kansas City Royals signed free agent RHP Mark Peterson to a minor league contract. |
| 06/11/12 | Kansas City Royals signed RHP Kevin Allen. |
| 06/11/12 | Kansas City Royals signed RHP Jake Newberry. |
| 06/10/12 | Kansas City Royals signed free agent LHP John Killen to a minor league contract. |
| 06/10/12 | Kansas City Royals signed RHP Alec Mills. |
| 06/09/12 | Kansas City Royals signed RHP Ashton Goudeau. |
| 06/09/12 | Kansas City Royals recalled Nate Adcock from Omaha Storm Chasers. |
| 06/09/12 | Kansas City Royals placed RHP Felipe Paulino on the 15-day disabled list retroactive to June 7, 2012. Strained right groin. |
| 06/08/12 | Kansas City Royals signed RHP John Walter. |
| 06/08/12 | Kansas City Royals signed LHP Hunter Haynes. |
| 06/08/12 | Kansas City Royals signed RHP Zach Lovvorn. |
| 06/08/12 | Kansas City Royals recalled Clint Robinson from Omaha Storm Chasers. |
| 06/08/12 | Kansas City Royals optioned Ryan Verdugo to Omaha Storm Chasers. |
| 06/07/12 | Kansas City Royals signed RHP Andrew Triggs. |
| 06/07/12 | Kansas City Royals signed RHP Kyle Zimmer. |
| 06/07/12 | Kansas City Royals signed LHP Matthew Strahm. |
| 06/07/12 | Kansas City Royals signed OF Alexis Rivera. |
| 06/07/12 | Kansas City Royals signed C Beau Maggi. |
| 06/07/12 | Kansas City Royals signed LHP Daniel Stumpf. |
| 06/07/12 | Kansas City Royals signed 1B Mark Donato. |
| 06/07/12 | Kansas City Royals signed RHP Zeb Sneed. |
| 06/07/12 | Kansas City Royals signed OF Ariel Estades. |
| 06/07/12 | Kansas City Royals signed RHP Shane Halley. |
| 06/06/12 | Kansas City Royals signed LHP Colin Rodgers. |
| 06/06/12 | Kansas City Royals signed C Chad Johnson. |
| 06/06/12 | Kansas City Royals signed LHP Matt Tenuta. |
| 06/06/12 | Kansas City Royals signed OF Fred Ford. |
| 06/06/12 | Kansas City Royals signed OF Alfredo Escalera-Maldonado. |
| 06/06/12 | Kansas City Royals signed OF Ethan Chapman. |
| 06/06/12 | Kansas City Royals signed C Parker Morin. |
| 06/05/12 | Kansas City Royals optioned Will Smith to Omaha Storm Chasers. |
| 06/05/12 | Kansas City Royals recalled Ryan Verdugo from Omaha Storm Chasers. |
| 06/05/12 | Kansas City Royals signed LHP Dylan Sons. |
| 06/04/12 | Kansas City Royals signed free agent RHP Tim Sexton to a minor league contract. |
| 06/01/12 | Kansas City Royals activated 2B Yuniesky Betancourt from the 15-day disabled list. |
| 06/01/12 | Kansas City Royals optioned Irving Falu to Omaha Storm Chasers. |