| 2025 | Kyle Higashioka |
| 2024 | |
| 2023 | Austin Hedges (Aug 2 onward) |
| 2022 | Charlie Culberson |
| 2021 | Ronald Guzman (until Apr 12) |
| 2020 | Ronald Guzman |
| 2019 | Ronald Guzman |
| 2018 | |
| 2017 | Yu Darvish (until Jul 31) |
| 2016 | Yu Darvish (st, May 28 onward) |
| 2015 | Yu Darvish (st) |
| 2014 | Yu Darvish (until Aug 9) |
| 2013 | Yu Darvish |
| 2012 | Greg Miclat (st), Yu Darvish |
| 2011 | Scott Coolbaugh (hitting coach, Jun 8 onward) |
| 2010 | Toby Hall (st), Jurickson Profar (st), Bengie Molina (Jul 1 onward) |
| 2009 | Greg Golson (May 7 only) |
| 2008 | Art Howe (bench coach) |
| 2007 | Art Howe (bench coach) |
| 2006 | Buck Showalter (manager) |
| 2005 | Buck Showalter (manager) |
| 2004 | Buck Showalter (manager) |
| 2003 | Buck Showalter (manager) |
| 2002 | Terry Francona (bench coach) |
| 2001 | Ken Caminiti (st, Apr ? – Jun 16), Chris Magruder (Sep 4 onward) |
| 2000 | Royce Clayton |
| 1999 | Royce Clayton |
| 1998 | Lee Stevens (until Aug 1), Royce Clayton (Aug 2 onward) |
| 1997 | Kevin L. Brown (st), Lee Stevens |
| 1996 | Kevin L. Brown (st), Lee Stevens (Jul 20 onward) |
| 1995 | Rick Schu (st) |
| 1994 | Greg Litton (st), Chuck Jackson (Jun 14 only) |
| 1993 | Craig Lefferts |
| 1992 | Toby Harrah (dugout coach until Jul 9, manager Jul 10 onward) |
| 1991 | Toby Harrah (1b coach) |
| 1990 | Toby Harrah (1b coach) |
| 1989 | Toby Harrah (1b coach) |
| 1988 | |
| 1987 | |
| 1986 | Toby Harrah |
| 1985 | Doug Rader (manager ?? – until May 16), Toby Harrah |
| 1984 | Doug Rader (manager) |
| 1983 | Doug Rader (manager) |
| 1982 | Steve Comer |
| 1981 | Steve Comer |
| 1980 | Steve Comer (until Jul 25) |
| 1979 | Mike Bucci (st), Steve Comer (Apr 11 onward) |
| 1978 | Toby Harrah |
| 1977 | Toby Harrah |
| 1976 | Toby Harrah |
| 1975 | Toby Harrah |
| 1974 | Toby Harrah |
| 1973 | Toby Harrah |
| 1972 | Toby Harrah |
Washington Senators Years |
|
| 1971 | Toby Harrah |
| 1970 | Eddie Brinkman |
| 1969 | Eddie Brinkman |
| 1968 | Eddie Brinkman (st, Apr 26 onward) |
| 1967 | Eddie Brinkman |
| 1966 | Eddie Brinkman |
| 1965 | Eddie Brinkman |
| 1964 | Eddie Brinkman |
| 1963 | Don Leppert (st), Eddie Brinkman |
| 1962 | Bud Zipfel |
| 1961 | Dutch Dotterer (until Apr 30), Bud Zipfel (Jul 26 onward) |
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