Dikembe Mutombo led the NBA in Blocks from 1990–2000 with 405.
That is 4 more blocks than second-place Hakeem Olajuwon.
| Rk | Player | Season | Value |
|---|---|---|---|
| 1 | Dikembe Mutombo | 1993-94 | 405 |
| 2 | Hakeem Olajuwon | 1992-93 | 401 |
| 3 | Hakeem Olajuwon | 1993-94 | 389 |
| 4 | David Robinson | 1990-91 | 335 |
| 5 | Dikembe Mutombo | 1995-96 | 332 |
| 6 | Dikembe Mutombo | 1994-95 | 328 |
| 7 | Alonzo Mourning | 1999-00 | 327 |
| 8 | David Robinson | 1991-92 | 305 |
| 9 | Hakeem Olajuwon | 1991-92 | 304 |
| 10 | Hakeem Olajuwon | 1994-95 | 304 |
| 11 | Alonzo Mourning | 1992-93 | 302 |
| 12 | David Robinson | 1994-95 | 301 |
| 13 | David Robinson | 1992-93 | 300 |
| 14 | David Robinson | 1995-96 | 296 |
| 15 | Shaquille O'Neal | 1999-00 | 294 |