Reds Roster & Staff
Transactions
| Date | Transaction |
| 07/31/15 | Cincinnati Reds optioned 1B Adam Duvall to Louisville Bats. |
| 07/31/15 | Cincinnati Reds recalled Kyle Waldrop from Louisville Bats. |
| 07/30/15 | Cincinnati Reds traded RHP Mike Leake to San Francisco Giants for 1B Adam Duvall and RHP Keury Mella. |
| 07/30/15 | Cincinnati Reds traded RHP Mike Leake to San Francisco Giants for 1B Adam Duvall and RHP Keury Mella. |
| 07/30/15 | Cincinnati Reds traded RHP Mike Leake to San Francisco Giants for 1B Adam Duvall and RHP Keury Mella. |
| 07/30/15 | Cincinnati Reds placed RHP Nate Adcock on the 15-day disabled list. right elbow injury |
| 07/30/15 | Cincinnati Reds optioned C Kyle Skipworth to Pensacola Blue Wahoos. |
| 07/30/15 | Cincinnati Reds recalled David Holmberg from Louisville Bats. |
| 07/30/15 | Cincinnati Reds recalled Keyvius Sampson from Louisville Bats. |
| 07/28/15 | Cincinnati Reds sent Chris Dominguez outright to Louisville Bats. |
| 07/27/15 | Cincinnati Reds recalled Kyle Skipworth from Pensacola Blue Wahoos. |
| 07/27/15 | Cincinnati Reds optioned LHP Brandon Finnegan to Louisville Bats. |
| 07/27/15 | Cincinnati Reds optioned LHP John Lamb to Louisville Bats. |
| 07/26/15 | Cincinnati Reds traded RHP Johnny Cueto and cash to Kansas City Royals for LHP Brandon Finnegan, LHP Cody Reed and LHP John Lamb. |
| 07/26/15 | Cincinnati Reds traded RHP Johnny Cueto and cash to Kansas City Royals for LHP Brandon Finnegan, LHP Cody Reed and LHP John Lamb. |
| 07/26/15 | Cincinnati Reds traded RHP Johnny Cueto and cash to Kansas City Royals for LHP Brandon Finnegan, LHP Cody Reed and LHP John Lamb. |
| 07/26/15 | Cincinnati Reds traded RHP Johnny Cueto and cash to Kansas City Royals for LHP Brandon Finnegan, LHP Cody Reed and LHP John Lamb. |
| 07/26/15 | Cincinnati Reds designated LF Chris Dominguez for assignment. |
| 07/25/15 | Cincinnati Reds signed free agent RHP Eury Jimenez to a minor league contract. |
| 07/25/15 | Cincinnati Reds signed free agent OF Gabriel Alvarez to a minor league contract. |
| 07/23/15 | Cincinnati Reds optioned LHP Tony Cingrani to Louisville Bats. |
| 07/22/15 | Tony Cingrani roster status changed by Cincinnati Reds. |
| 07/20/15 | Cincinnati Reds placed LHP Manny Parra on the 15-day disabled list. Strained left elbow |
| 07/20/15 | Cincinnati Reds recalled Dylan Axelrod from Louisville Bats. |
| 07/20/15 | Cincinnati Reds transferred C Devin Mesoraco from the 15-day disabled list to the 60-day disabled list. June 2015 left hip surgery. |
| 07/17/15 | Cincinnati Reds optioned RHP Carlos Contreras to Louisville Bats. |
| 07/17/15 | Cincinnati Reds recalled Jumbo Diaz from Louisville Bats. |
| 07/16/15 | Cincinnati Reds signed SS Jesus Lopez. |
| 07/16/15 | Cincinnati Reds sent RHP Donovan Hand outright to Louisville Bats. |
| 07/14/15 | Cincinnati Reds signed RHP Darren Shred. |
| 07/13/15 | Cincinnati Reds claimed RHP Donn Roach off waivers from Chicago Cubs. |
| 07/13/15 | Cincinnati Reds designated RHP Donovan Hand for assignment. |
| 07/11/15 | Cincinnati Reds optioned CF Yorman Rodriguez to Louisville Bats. |
| 07/11/15 | Cincinnati Reds activated RHP Raisel Iglesias from the 15-day disabled list. |
| 07/10/15 | Cincinnati Reds signed free agent SS Miguel Hernandez to a minor league contract. |
| 07/10/15 | Cincinnati Reds signed free agent C Carlos Reina to a minor league contract. |
| 07/09/15 | Cincinnati Reds signed OF Miles Gordon. |
| 07/09/15 | Cincinnati Reds signed RHP Mitchell Tripp. |
| 07/06/15 | Cincinnati Reds signed free agent SS Alexander Salazar to a minor league contract. |
| 07/06/15 | Cincinnati Reds recalled Yorman Rodriguez from Louisville Bats. |
| 07/06/15 | Cincinnati Reds signed LHP Isaac Anesty. |
| 07/06/15 | Cincinnati Reds signed 2B J.D. Salmon-Williams. |
| 07/06/15 | Cincinnati Reds signed free agent C Elvis Gomez to a minor league contract. |
| 07/05/15 | Cincinnati Reds optioned RHP Josh Smith to Pensacola Blue Wahoos. |
| 07/03/15 | Cincinnati Reds sent LHP Tony Cingrani on a rehab assignment to Louisville Bats. |
| 07/03/15 | Cincinnati Reds signed RHP Connor Bennett. |
| 07/02/15 | Cincinnati Reds signed free agent OF Felix Abreu to a minor league contract. |
| 07/02/15 | Cincinnati Reds sent LHP Tony Cingrani on a rehab assignment to Louisville Bats. |
| 07/02/15 | Cincinnati Reds signed free agent OF Cristian Olivo to a minor league contract. |
| 07/02/15 | Cincinnati Reds signed free agent SS Giovanni Diaz to a minor league contract. |
| 07/02/15 | Cincinnati Reds signed free agent SS Danielito Remy to a minor league contract. |
| 07/02/15 | Cincinnati Reds signed free agent OF Reniel Ozuna to a minor league contract. |
| 07/02/15 | Cincinnati Reds signed free agent P Cristian Plasencio to a minor league contract. |
| 07/02/15 | Cincinnati Reds signed free agent P Francis Jones to a minor league contract. |