| Tm | Name | W | L | Start | End | |
|---|---|---|---|---|---|---|
| ANA | John McNamara | 81 | 81 | Beg | End | |
| ATL | Joe Torre | 80 | 82 | Beg | End | |
| BAL | Joe Altobelli | 85 | 77 | Beg | End | |
| BOS | Ralph Houk | 86 | 76 | Beg | End | |
| CHA | Tony LaRussa | 74 | 88 | Beg | End | |
| CHN | Jim Frey | 96 | 65 | Beg | End | |
| CIN | Vern Rapp | 51 | 70 | Beg | 19840815 | |
| CIN | Pete Rose | 19 | 22 | 19840817 | End | |
| CLE | Pat Corrales | 75 | 87 | Beg | End | |
| DET | Sparky Anderson | 104 | 58 | Beg | End | |
| HOU | Bob Lillis | 80 | 82 | Beg | End | |
| KCA | Dick Howser | 84 | 78 | Beg | End | |
| LAN | Tom Lasorda | 79 | 83 | Beg | End | |
| MIL | Rene Lachemann | 67 | 94 | Beg | End | |
| MIN | Billy Gardner | 81 | 81 | Beg | End | |
| NYA | Yogi Berra | 87 | 75 | Beg | End | |
| NYN | Davey Johnson | 90 | 72 | Beg | End | |
| OAK | Steve Boros | 20 | 24 | Beg | 19840524 | |
| OAK | Jackie Moore | 57 | 61 | 19840525 | End | |
| PHI | Paul Owens | 81 | 81 | Beg | End | |
| PIT | Chuck Tanner | 75 | 87 | Beg | End | |
| SDN | Dick Williams | 92 | 70 | Beg | End | |
| SEA | Del Crandall | 59 | 76 | Beg | 19840831 | |
| SEA | Chuck Cottier | 15 | 12 | 19840901 | End | |
| SFN | Frank Robinson | 42 | 64 | Beg | 19840804 | |
| SFN | Danny Ozark | 24 | 32 | 19840805 | End | |
| SLN | Whitey Herzog | 84 | 78 | Beg | End | |
| TEX | Doug Rader | 69 | 92 | Beg | End | |
| TOR | Bobby Cox | 89 | 73 | Beg | End | |
| WAS | Bill Virdon | 64 | 67 | Beg | 19840829 | |
| WAS | Jim Fanning | 14 | 16 | 19840830 | End |
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