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 | Blocks |
|---|---|---|---|
| 1 | DM Dikembe Mutombo![]() | 1993-94 | 405 |
| 2 | HO Hakeem Olajuwon![]() | 1992-93 | 401 |
| 3 | HO Hakeem Olajuwon![]() | 1993-94 | 389 |
| 4 | DR David Robinson![]() | 1990-91 | 335 |
| 5 | DM Dikembe Mutombo![]() | 1995-96 | 332 |
| 6 | DM Dikembe Mutombo![]() | 1994-95 | 328 |
| 7 | AM Alonzo Mourning![]() | 1999-00 | 327 |
| 8 | DR David Robinson![]() | 1991-92 | 305 |
| 9 | HO Hakeem Olajuwon![]() | 1991-92 | 304 |
| 10 | HO Hakeem Olajuwon![]() | 1994-95 | 304 |
| 11 | AM Alonzo Mourning![]() | 1992-93 | 302 |
| 12 | DR David Robinson![]() | 1994-95 | 301 |
| 13 | DR David Robinson![]() | 1992-93 | 300 |
| 14 | DR David Robinson![]() | 1995-96 | 296 |
| 15 | SO Shaquille O'Neal![]() | 1999-00 | 294 |