Plus/minus compares goals for and goals against while the player is on the ice. Higher means the player's team outscored opponents more with him on the ice. Below are the top 354 NHL playoff players ranked by Playoff Plus Minus for 1990-91.
| # | Player | Team | +/- |
|---|---|---|---|
| 1 | 17 | ||
| 2 | J. MullenJoe Mullen 33YRW | 17 | |
| 3 | 14 | ||
| 4 | 14 | ||
| 5 | 13 | ||
| 6 | 13 | ||
| 7 | 10 | ||
| 8 | S. GavinStew Gavin 30YRW | 9 | |
| 9 | 9 | ||
| 10 | 8 | ||
| 11 | 8 | ||
| 12 | 7 | ||
| 13 | 7 | ||
| 14 | A. GravesAdam Graves 22YLW | 7 | |
| 15 | 7 | ||
| 16 | 7 | ||
| 17 | 7 | ||
| 18 | 7 | ||
| 19 | 7 | ||
| 20 | 6 | ||
| 21 | M. RecchiMark Recchi 22YRW | 6 | |
| 22 | 6 | ||
| 23 | 6 | ||
| 24 | 6 | ||
| 25 | B. ErreyBob Errey 25YLW | 5 | |
| 26 | 5 | ||
| 27 | 5 | ||
| 28 | 5 | ||
| 29 | 5 | ||
| 30 | B. HullBrett Hull 25YRW | 5 | |
| 31 | 5 | ||
| 32 | 4 | ||
| 33 | 4 | ||
| 34 | 4 | ||
| 35 | 4 | ||
| 36 | 4 | ||
| 37 | 4 | ||
| 38 | 4 | ||
| 39 | 3 | ||
| 40 | 3 | ||
| 41 | J. MurphyJoe Murphy 22YRW | 3 | |
| 42 | 3 | ||
| 43 | 3 | ||
| 44 | 3 | ||
| 45 | M. KeaneMike Keane 23YRW | 3 | |
| 46 | 3 | ||
| 47 | 3 | ||
| 48 | 3 | ||
| 49 | 3 | ||
| 50 | M. HunterMark Hunter 27YRW | 3 |