| Details | |
|---|---|
| Duration | March 5 – November 2 |
| Edition | 14th |
| Tournaments | 9 |
| Achievements (singles) | |
| Most tournament titles |  Juan Carlos Ferrero  Andy Roddick (2) |
| Most tournament finals |  Guillermo Coria Juan Carlos Ferrero Andy Roddick (2) |
← 2002 2004 → | |
The table below shows the 2003 Tennis 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.
| 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 |
The ATP Masters Series is part of the elite tour for professional tennis organised by the ATP called the ATP Tour.
The ATP Masters Series are part of the elite tour for professional men's tennis organized by the Association of Tennis Professionals called the ATP Tour.
The 1990 ATP Championship Series, Single Week was a series of tennis tournament that was part of the 1990 ATP Tour, the elite tour for professional men's tennis organised by the Association of Tennis Professionals. It formed the tier below the Grand Slam tournaments.
The 1991 ATP Championship Series, Single Week was a series of tennis tournament that was part of the 1991 ATP Tour, the elite tour for professional men's tennis organised by the Association of Tennis Professionals. It formed the tier below the Grand Slam tournaments.
The 1992 ATP Championship Series, Single Week was a series of tennis tournament that was part of the 1992 ATP Tour, the elite tour for professional men's tennis organised by the Association of Tennis Professionals. It formed the tier below the Grand Slam tournaments.
The 1993 ATP Championship Series, Single Week was a series of tennis tournament that was part of the 1993 ATP Tour, the elite tour for professional men's tennis organised by the Association of Tennis Professionals. It formed the tier below the Grand Slam tournaments.
The 1994 ATP Championship Series, Single Week was a series of tennis tournaments that was part of the 1994 ATP Tour, the elite tour for professional men's tennis organised by the Association of Tennis Professionals. It formed the tier below the Grand Slam tournaments.
The 1995 ATP Championship Series, Single Week was a series of tennis tournaments that was part of the 1995 ATP Tour, the elite tour for professional men's tennis organised by the Association of Tennis Professionals. It formed the tier below the Grand Slam tournaments.
The 1996 ATP Super 9 were part of the 1996 ATP Tour, the elite tour for professional men's tennis organised by the Association of Tennis Professionals.
The 1997 ATP Super 9 were part of the 1997 ATP Tour, the elite tour for professional men's tennis organised by the Association of Tennis Professionals.
The 1998 ATP Super 9 were part of the 1998 ATP Tour, the elite tour for professional men's tennis organised by the Association of Tennis Professionals.
The table below shows the 2000 Tennis Masters Series schedule.
The table below shows the 2001 Tennis Masters Series schedule.
The table below shows the 2004 ATP Masters Series schedule.
The table below shows the 2005 Tennis Masters Series schedule.
The table below shows the 2002 Tennis Masters Series schedule.
The table below shows the 2006 Tennis Masters Series schedule.
The 1999 ATP Super 9 were part of the 1999 ATP Tour, the elite tour for professional men's tennis organised by the Association of Tennis Professionals.
NThe WTA Tier I events are part of the elite tour for professional women's tennis organised by the WTA called the WTA Tour.
The twenty-third edition of the ATP Masters Series. The champion of each Masters event is awarded a 1,000 rankings points.