Reds Roster & Staff
Transactions
| Date | Transaction |
| 11/27/19 | Cincinnati Reds traded 1B Brian O'Grady to Tampa Bay Rays for cash and Player To Be Named Later. |
| 11/25/19 | Toronto Blue Jays traded RHP Justin Shafer to Cincinnati Reds for cash. |
| 11/25/19 | Cincinnati Reds designated 1B Brian O'Grady for assignment. |
| 11/25/19 | Cincinnati Reds claimed LF Nick Martini off waivers from San Diego Padres. |
| 11/25/19 | Cincinnati Reds designated RHP Jimmy Herget for assignment. |
| 11/20/19 | Cincinnati Reds selected the contract of Tony Santillan from Chattanooga Lookouts. |
| 11/20/19 | Cincinnati Reds selected the contract of Ryan Hendrix from Chattanooga Lookouts. |
| 11/20/19 | Cincinnati Reds selected the contract of Tyler Stephenson from Chattanooga Lookouts. |
| 11/20/19 | Tampa Bay Rays traded RHP Jose De Leon to Cincinnati Reds for Player To Be Named Later and cash. |
| 11/20/19 | Cincinnati Reds selected the contract of Tejay Antone from Louisville Bats. |
| 11/18/19 | Cincinnati Reds signed free agent 2B Christian Colon to a minor league contract and invited him to spring training. |
| 11/12/19 | RHP Walker Weickel assigned to Cincinnati Reds. |
| 11/08/19 | Cincinnati Reds signed free agent RHP Alex Powers to a minor league contract and invited him to spring training. |
| 11/04/19 | Cincinnati Reds sent RHP Jackson Stephens outright to Louisville Bats. |
| 11/04/19 | Cincinnati Reds sent 2B Derek Dietrich outright to Louisville Bats. |
| 11/04/19 | Cincinnati Reds sent 2B Christian Colon outright to Louisville Bats. |
| 11/04/19 | Cincinnati Reds sent RHP Keury Mella outright to Louisville Bats. |
| 11/04/19 | 2B Derek Dietrich roster status changed by Cincinnati Reds. |
| 11/02/19 | Cincinnati Reds signed free agent CF Luis Leones to a minor league contract. |