Royals Roster & Staff
Transactions
| Date | Transaction |
| 06/30/21 | Kansas City Royals placed 3B Emmanuel Rivera on the 10-day injured list. Left hamate break. |
| 06/30/21 | Kansas City Royals recalled RF Edward Olivares from Omaha Storm Chasers. |
| 06/29/21 | Kansas City Royals sent LHP Daniel Tillo on a rehab assignment to ACL Royals Blue. |
| 06/29/21 | Kansas City Royals placed RHP Wade Davis on the 10-day injured list. Right forearm strain. |
| 06/29/21 | Kansas City Royals recalled LHP Richard Lovelady from Omaha Storm Chasers. |
| 06/28/21 | Kansas City Royals designated 3B Kelvin Gutierrez for assignment. |
| 06/28/21 | Kansas City Royals signed free agent RHP Felix Arronde to a minor league contract. |
| 06/28/21 | Kansas City Royals selected the contract of 3B Emmanuel Rivera from Omaha Storm Chasers. |
| 06/27/21 | Kansas City Royals selected the contract of RHP Matt Marsili from Gastonia Honey Hunters. |
| 06/25/21 | Kansas City Royals signed free agent 3B Angel Santana to a minor league contract. |
| 06/24/21 | Kansas City Royals signed free agent SS Joshua Rivera to a minor league contract. |
| 06/23/21 | Kansas City Royals signed free agent RHP Kipp Rollings to a minor league contract. |
| 06/23/21 | Kansas City Royals optioned RHP Jackson Kowar to Omaha Storm Chasers. |
| 06/23/21 | Kansas City Royals activated LHP Danny Duffy from the 10-day injured list. |
| 06/21/21 | Kansas City Royals recalled 1B Ryan O'Hearn, and from Omaha Storm Chasers. |
| 06/21/21 | Kansas City Royals signed free agent 3B Jordan Hovey to a minor league contract. |
| 06/21/21 | Kansas City Royals placed SS Adalberto Mondesi on the 10-day injured list. Strained left oblique. |
| 06/20/21 | Kansas City Royals placed C Cam Gallagher on the 10-day injured list. Right shoulder impingement syndrome. |
| 06/20/21 | Kansas City Royals recalled C Sebastian Rivero from Omaha Storm Chasers. |
| 06/18/21 | Kansas City Royals placed RHP Ronald Bolanos on the 60-day injured list. Right forearm strain. |
| 06/18/21 | Kansas City Royals selected the contract of RHP Anthony Swarzak from Omaha Storm Chasers. |
| 06/17/21 | Kansas City Royals optioned RF Edward Olivares to Omaha Storm Chasers. |
| 06/17/21 | Kansas City Royals selected the contract of RHP Jose Cuas from Long Island Ducks. |
| 06/15/21 | Kansas City Royals placed RHP Ronald Bolanos on the 10-day injured list. |
| 06/15/21 | Kansas City Royals activated SS Adalberto Mondesi from the 10-day injured list. |
| 06/14/21 | Kansas City Royals placed LF Andrew Benintendi on the 10-day injured list. Right rib fracture. |
| 06/14/21 | Kansas City Royals activated LF Andrew Benintendi. |
| 06/14/21 | Kansas City Royals signed free agent LHP Yenfri Sosa to a minor league contract. |
| 06/14/21 | Kansas City Royals recalled RF Edward Olivares from Omaha Storm Chasers. |
| 06/13/21 | Kansas City Royals signed free agent SS Kevin Nivar to a minor league contract. |
| 06/13/21 | Kansas City Royals signed free agent OF Austin Dennis to a minor league contract. |
| 06/11/21 | Kansas City Royals sent RHP Jake Newberry outright to Omaha Storm Chasers. |
| 06/09/21 | Kansas City Royals optioned RF Edward Olivares to Omaha Storm Chasers. |
| 06/09/21 | Kansas City Royals recalled RHP Carlos Hernandez, and from Omaha Storm Chasers. |
| 06/07/21 | Kansas City Royals optioned RHP Jakob Junis to Omaha Storm Chasers. |
| 06/07/21 | Kansas City Royals selected the contract of RHP Jackson Kowar from Omaha Storm Chasers. |
| 06/07/21 | Kansas City Royals designated RHP Jake Newberry for assignment. |
| 06/06/21 | Kansas City Royals sent LHP Daniel Tillo on a rehab assignment to Northwest Arkansas Naturals. |
| 06/06/21 | Kansas City Royals optioned RHP Tyler Zuber to Omaha Storm Chasers. |
| 06/06/21 | Kansas City Royals placed SS Adalberto Mondesi on the 10-day injured list. Left hamstring strain. |
| 06/06/21 | Kansas City Royals recalled RF Edward Olivares from Omaha Storm Chasers. |
| 06/06/21 | Kansas City Royals activated RHP Josh Staumont from the 10-day injured list. |
| 06/04/21 | Kansas City Royals traded RHP Grant Gambrell and RHP Luis De La Rosa to Boston Red Sox. |
| 06/04/21 | Kansas City Royals traded RHP Grant Gambrell and RHP Luis De La Rosa to Boston Red Sox. |
| 06/03/21 | Kansas City Royals optioned RF Edward Olivares to Omaha Storm Chasers. |
| 06/03/21 | Kansas City Royals recalled RHP Ronald Bolanos from Omaha Storm Chasers. |