| Details | |
|---|---|
| Duration | March 5 – November 2 |
| Edition | 14th |
| Tournaments | 9 |
| Achievements (singles) | |
| Most titles |  Juan Carlos Ferrero Andy Roddick (2) |
| Most finals |  Guillermo Coria Juan Carlos Ferrero Andy Roddick (2) |
←2002 2004 → | |
The table below shows the2003 Tennis Masters Series schedule.
TheATP Masters Series are part of the elite tour for professional men'stennis organised by theAssociation of Tennis Professionals.
| Masters | Singles champions | Runners-up | Score | Doubles champions | Runners-up | Score |
|---|---|---|---|---|---|---|
| Indian Wells Singles –Doubles |  Lleyton Hewitt |  Gustavo Kuerten | 6–1, 6–1 |  Wayne Ferreira Yevgeny Kafelnikov | Bob Bryan Mike Bryan | 6–1, 6–4 |
| Miami Singles –Doubles | Andre Agassi | Carlos Moyà | 6–3, 6–3 |  Roger Federer* |  Leander Paes David Rikl | 7–5, 6–3 |
 Max Mirnyi | ||||||
| Monte Carlo Singles –Doubles | Juan Carlos Ferrero | Guillermo Coria | 6–2, 6–2 | Mahesh Bhupathi Max Mirnyi |  Michaël Llodra Fabrice Santoro | 4–6, 7–5, 6–2 |
| Rome Singles –Doubles | Félix Mantilla* | Roger Federer | 7–5, 6–2, 7–6(10–8) | Wayne Arthurs | Michaël Llodra Fabrice Santoro | 7–5, 7–6 |
| Paul Hanley* | ||||||
| Hamburg Singles –Doubles | Guillermo Coria* | Agustín Calleri | 6–3, 6–4, 6–4 |  Mark Knowles Daniel Nestor | Mahesh Bhupathi Max Mirnyi | 6–4, 6–4 |
| Montreal Singles –Doubles | Andy Roddick* | David Nalbandian | 6–1, 6–3 | Mahesh Bhupathi Max Mirnyi |  Jonas Björkman Todd Woodbridge | 6–3, 7–6(7–4) |
| Cincinnati Singles –Doubles | Andy Roddick | Mardy Fish | 4–6, 7–6(7–3), 7–6(7–4) | Bob Bryan Mike Bryan | Wayne Arthurs Paul Hanley | 7–6, 6–4 |
| Madrid Singles –Doubles | Juan Carlos Ferrero |  Nicolás Massú | 6–3, 6–4, 6–3 | Mahesh Bhupathi Max Mirnyi |  Wayne Black Kevin Ullyett | 6–2, 2–6, 6–3 |
| Paris Singles –Doubles |  Tim Henman* |  Andrei Pavel | 6–2, 7–6(8–6), 7–6(7–2) | Wayne Arthurs Paul Hanley | Michaël Llodra Fabrice Santoro | 6–3, 1–6, 6–3 |
| # | Player | IN | MI | MO | HA | RO | CA | CI | ST | PA | # | Winning span |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Andre Agassi | 1 | 6 | - | - | 1 | 3 | 2 | 1 | 2 | 16 | 1990–2003 (14) | |
| Pete Sampras | 2 | 3 | - | - | 1 | - | 3 | - | 2 | 11 | 1992–2000 (9) | |
 Thomas Muster | - | 1 | 3 | - | 3 | - | - | 1 | - | 8 | 1990–1997 (8) | |
| Michael Chang | 3 | 1 | - | - | - | 1 | 2 | - | - | 7 | 1990–1997 (8) | |
| Jim Courier | 2 | 1 | - | - | 2 | - | - | - | - | 5 | 1991–1993 (3) | |
 Boris Becker | - | - | - | - | - | - | - | 4 | 1 | 5 | 1990–1996 (7) | |
| Gustavo Kuerten | - | - | 2 | 1 | 1 | - | 1 | - | - | 5 | 1999–2001 (3) | |
| Marcelo Ríos | 1 | 1 | 1 | 1 | 1 | - | - | - | - | 5 | 1997–1999 (3) | |
| Stefan Edberg | 1 | - | - | 1 | - | - | 1 | - | 1 | 4 | 1990–1992 (3) | |
| Juan Carlos Ferrero | - | - | 2 | - | 1 | - | 1 | - | - | 4 | 2001–2003 (3) | |
 Andrei Medvedev | - | - | 1 | 3 | - | - | - | - | - | 4 | 1994–1997 (4) | |
| Thomas Enqvist | - | - | - | - | - | - | 1 | 1 | 1 | 3 | 1996–2000 (5) | |
| Marat Safin | - | - | - | - | - | 1 | - | - | 2 | 3 | 2000–2002 (3) | |
| Sergi Bruguera | - | - | 2 | - | - | - | - | - | - | 2 | 1991–1993 (3) | |
| Andrei Chesnokov | - | - | 1 | - | - | 1 | - | - | - | 2 | 1990–1991 (2) | |
| Àlex Corretja | 1 | - | - | - | 1 | - | - | - | - | 2 | 1997–2000 (4) | |
| Wayne Ferreira | - | - | - | - | - | 1 | - | 1 | - | 2 | 1996–2000 (5) | |
| Guy Forget | - | - | - | - | - | - | 1 | - | 1 | 2 | 1991 | |
| Lleyton Hewitt | 2 | - | - | - | - | - | - | - | - | 2 | 2002–2003 (2) | |
 Goran Ivanišević | - | - | - | - | - | - | - | 1 | 1 | 2 | 1992–1993 (2) | |
 Richard Krajicek | - | 1 | - | - | - | - | - | 1 | - | 2 | 1998–1999 (2) | |
| Carlos Moyá | - | - | 1 | - | - | - | 1 | - | - | 2 | 1998–2002 (5) | |
| Patrick Rafter | - | - | - | - | - | 1 | 1 | - | - | 2 | 1998 | |
| Andy Roddick | - | - | - | - | - | 1 | 1 | - | - | 2 | 2003 | |
| Michael Stich | - | - | - | 1 | - | - | - | 1 | - | 2 | 1993 | |
| Juan Aguilera | - | - | - | 1 | - | - | - | - | - | 1 | 1990 | |
| Guillermo Cañas | - | - | - | - | - | 1 | - | - | - | 1 | 2002 | |
| Guillermo Coria | - | - | - | 1 | - | - | - | - | - | 1 | 2003 | |
| Albert Costa | - | - | - | 1 | - | - | - | - | - | 1 | 1998 | |
| Roberto Carretero | - | - | - | 1 | - | - | - | - | - | 1 | 1996 | |
| Roger Federer | - | - | - | 1 | - | - | - | - | - | 1 | 2002 | |
| Sébastien Grosjean | - | - | - | - | - | - | - | - | 1 | 1 | 2001 | |
| Tommy Haas | - | - | - | - | - | - | - | 1 | - | 1 | 2001 | |
| Tim Henman | - | - | - | - | - | - | - | - | 1 | 1 | 2003 | |
| Thomas Johansson | - | - | - | - | - | 1 | - | - | - | 1 | 1999 | |
| Petr Korda | - | - | - | - | - | - | - | 1 | - | 1 | 1997 | |
| Felix Mantilla | - | - | - | - | 1 | - | - | - | - | 1 | 2003 | |
| Magnus Norman | - | - | - | - | 1 | - | - | - | - | 1 | 2000 | |
| Karel Nováček | - | - | - | 1 | - | - | - | - | - | 1 | 1991 | |
| Andrei Pavel | - | - | - | - | - | 1 | - | - | - | 1 | 2001 | |
| Mikael Pernfors | - | - | - | - | - | 1 | - | - | - | 1 | 1993 | |
| Mark Philippoussis | 1 | - | - | - | - | - | - | - | - | 1 | 1999 | |
| Cédric Pioline | - | - | 1 | - | - | - | - | - | - | 1 | 2000 | |
| Albert Portas | - | - | - | - | 1 | - | - | - | - | 1 | 2001 | |
| Greg Rusedski | - | - | - | - | - | - | - | - | 1 | 1 | 1998 | |
| Emilio Sánchez | - | - | - | - | 1 | - | - | - | - | 1 | 1991 | |
| Chris Woodruff | - | - | - | - | - | 1 | - | - | - | 1 | 1997 | |
| # | Player | IN | MI | MO | HA | RO | CA | CI | ST | PA | # | Winning span |