Royals Roster & Staff
Transactions
| Date | Transaction |
| 08/31/21 | Kansas City Royals recalled RHP Jakob Junis from Omaha Storm Chasers. |
| 08/31/21 | Kansas City Royals sent RHP Ronald Bolanos on a rehab assignment to Omaha Storm Chasers. |
| 08/30/21 | Kansas City Royals optioned RHP Scott Blewett to Omaha Storm Chasers. |
| 08/29/21 | Kansas City Royals recalled RHP Tyler Zuber from Omaha Storm Chasers. |
| 08/29/21 | Kansas City Royals placed LHP Richard Lovelady on the 10-day injured list. Left UCL sprain. |
| 08/27/21 | Kansas City Royals recalled RF Edward Olivares from Omaha Storm Chasers. |
| 08/27/21 | Kansas City Royals activated RHP Josh Staumont from the 10-day injured list. |
| 08/27/21 | Kansas City Royals placed RHP Brad Keller on the 10-day injured list. Right lat strain. |
| 08/27/21 | Toronto Blue Jays claimed CF Jarrod Dyson off waivers from Kansas City Royals. |
| 08/26/21 | Kansas City Royals recalled RHP Scott Blewett from Omaha Storm Chasers. |
| 08/26/21 | Kansas City Royals placed RHP Josh Staumont on the 10-day injured list. |
| 08/25/21 | Kansas City Royals signed free agent LHP Ricardito Lorenzo to a minor league contract. |
| 08/25/21 | Kansas City Royals signed free agent LHP David Rodriguez to a minor league contract. |
| 08/23/21 | Kansas City Royals activated RHP Kyle Zimmer. |
| 08/23/21 | Kansas City Royals placed LHP Jake Brentz on the 10-day injured list. Left shoulder impingement. |
| 08/19/21 | Kansas City Royals sent RHP Ronald Bolanos on a rehab assignment to Northwest Arkansas Naturals. |
| 08/16/21 | Kansas City Royals sent RHP Ronald Bolanos on a rehab assignment to ACL Royals Blue. |
| 08/16/21 | Kansas City Royals placed RHP Greg Holland on the 10-day injured list. Right shoulder impingement syndrome. |
| 08/16/21 | Kansas City Royals recalled RHP Joel Payamps from Omaha Storm Chasers. |
| 08/11/21 | Kansas City Royals activated RHP Brady Singer. |
| 08/11/21 | Kansas City Royals optioned RHP Joel Payamps to Omaha Storm Chasers. |
| 08/11/21 | Kansas City Royals signed free agent LHP Jan Nunez to a minor league contract. |
| 08/11/21 | Kansas City Royals sent RHP Kyle Zimmer on a rehab assignment to Omaha Storm Chasers. |
| 08/10/21 | Kansas City Royals recalled RHP Joel Payamps from Omaha Storm Chasers. |
| 08/10/21 | Kansas City Royals optioned RF Edward Olivares to Omaha Storm Chasers. |
| 08/10/21 | Kansas City Royals signed free agent RHP Ruben Ramirez to a minor league contract. |
| 08/09/21 | Kansas City Royals optioned LHP Daniel Tillo to Northwest Arkansas Naturals. |
| 08/05/21 | Kansas City Royals sent LHP Daniel Tillo on a rehab assignment to Northwest Arkansas Naturals. |
| 08/04/21 | Kansas City Royals placed RHP Kyle Zimmer on the 10-day injured list. Neck/trap spasms. |
| 08/04/21 | Kansas City Royals activated 3B Emmanuel Rivera. |
| 08/03/21 | Kansas City Royals sent SS Adalberto Mondesi on a rehab assignment to Omaha Storm Chasers. |
| 08/03/21 | Kansas City Royals sent 3B Emmanuel Rivera on a rehab assignment to Omaha Storm Chasers. |