| 2004 ATP Masters Series | |
| Duration: | March 10 – November 8 |
| Edition: | 15th |
| Tournaments: | 9 |
| Most Tournament Titles: | Roger Federer (3) |
| Most Tournament Finals: |  Guillermo Coria Roger Federer (3) |
| Previous: | 2003 |
| Next: | 2005 |
See main article: 2004 ATP Tour.
The table below shows the 2004 ATP Masters Series schedule.
The ATP Masters Series are part of the elite tour for professional men's tennis organised by the Association of Tennis Professionals.