| 2023 | Mark Mathias (st) |
| 2022 | Steven Duggar (Jun 26 – Jul 12), Mark Mathias (Aug 17 onward) |
| 2021 | Isiah Kiner-Falefa |
| 2020 | Isiah Kiner-Falefa |
| 2019 | Isiah Kiner-Falefa |
| 2018 | Anthony Iapoce (hitting coach, until Mar 19), Tommy Joseph (Mar 20-29), Isiah Kiner-Falefa (Apr 10 onward) |
| 2017 | Anthony Iapoce (hitting coach) |
| 2016 | Anthony Iapoce (hitting coach) |
| 2015 | Adam Rosales (until Aug 12) |
| 2014 | Adam Rosales (st, Jul 1 onward) |
| 2013 | Mike Olt (st), Adam Rosales (Aug 17 onward) |
| 2012 | Brad Hawpe (st), Mike Olt (Aug 2 onward) |
| 2011 | Endy Chavez (st, May 14 onward) |
| 2010 | Bobby Jones (Coach – Sep 1 onward) |
| 2009 | Hank Blalock |
| 2008 | Hank Blalock |
| 2007 | Hank Blalock |
| 2006 | Hank Blalock |
| 2005 | Hank Blalock |
| 2004 | Hank Blalock |
| 2003 | Hank Blalock |
| 2002 | Jamie Quirk (bullpen coach, acting pitching coach Jun 20 onward) |
| 2001 | Chad Curtis |
| 2000 | Lee Stevens (st), Pedro Valdes (Aug 9 onward) |
| 1999 | Lee Stevens |
| 1998 | Lee Stevens (Aug 3 onward) |
| 1997 | Billy Ripken |
| 1996 | Luis Ortiz (st, Sep 19 – 28) |
| 1995 | Luis Ortiz (st, Jun 4 onward) |
| 1994 | Jeff Huson (st) |
| 1993 | Jeff Huson (May 28 onward) |
| 1992 | Jeff Huson |
| 1991 | Jeff Huson |
| 1990 | Jeff Huson |
| 1989 | Ron Washington (st – Yes, that one) |
| 1988 | Pete O’Brien |
| 1987 | Pete O’Brien |
| 1986 | Pete O’Brien |
| 1985 | Pete O’Brien |
| 1984 | Pete O’Brien |
| 1983 | Pete O’Brien |
| 1982 | John Ellis (st), Larry Parrish (Apr 8 onward – switched to 15 unknown date) |
| 1981 | John Ellis |
| 1980 | John Ellis |
| 1979 | John Ellis |
| 1978 | John Ellis |
| 1977 | John Ellis |
| 1976 | John Ellis (until May 9) |
| 1975 | Joe Lovitto (st), Jim Spencer |
| 1974 | Joe Lovitto |
| 1973 | |
| 1972 | Ted Williams (Manager) |
Washington Senators Years |
|
| 1971 | Ted Williams (Manager) |
| 1970 | Ted Williams (Manager) |
| 1969 | Ted Williams (Manager) |
| 1968 | Frank Howard |
| 1967 | Frank Howard |
| 1966 | Frank Howard |
| 1965 | Frank Howard |
| 1964 | Roy Sievers |
| 1963 | Ken Retzer (st), Minnie Minoso |
| 1962 | Ken Retzer |
| 1961 | Marty Keough |
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