| Singles | |
|---|---|
| 2003 Grand Prix Hassan II | |
| Champion |  |
| Runner-up |  |
| Final score | 6–2, 2–6, 6–1 |
Younes El Aynaoui was the defending champion but lost in the final 6–2, 2–6, 6–1 against Julien Boutter.
Younes El Aynaoui is a professional tennis player from Morocco.
Julien Boutter is a former professional male tennis player from France.
| Semifinals | Final | ||||||||||||
| 1 | | 6 | 3 | 6 | |||||||||
| | 2 | 6 | 3 | ||||||||||
| 1 | | 2 | 6 | 1 | |||||||||
| | 6 | 2 | 6 | ||||||||||
| 4 | | 3 | 4 | ||||||||||
| | 6 | 6 | |||||||||||
| First Round | Second Round | Quarter-finals | Semi-finals | ||||||||||||||||||||||||
| 1 | | 3 | 6 | 6 | |||||||||||||||||||||||
| | 6 | 3 | 2 | 1 | | 6 | 3 | 6 | |||||||||||||||||||
 | 4 | 6 | 5 |  | 4 | 6 | 3 | ||||||||||||||||||||
| | 6 | 4 | 7 | 1 | | 4 | 6 | 7 | |||||||||||||||||||
 | 77 | 6 |  | 6 | 3 | 5 | |||||||||||||||||||||
| | 64 | 4 | | 6 | 1 | 4 | |||||||||||||||||||||
| | 0 | 6 | 77 | | 2 | 6 | 6 | ||||||||||||||||||||
| 6 | | 6 | 3 | 65 | 1 | | 6 | 3 | 6 | ||||||||||||||||||
| 3 | | 4 | 7 | 2 | | 2 | 6 | 3 | |||||||||||||||||||
| | 6 | 5 | 6 | | 3 | 0 | |||||||||||||||||||||
| WC | | 1 | 612 | | 6 | 6 | |||||||||||||||||||||
| | 6 | 714 | | 3 | 711 | 6 | |||||||||||||||||||||
| | 6 | 5 | 6 | | 6 | 69 | 4 | ||||||||||||||||||||
| Q |  | 4 | 7 | 3 | | 6 | 6 | ||||||||||||||||||||
| Q | | 77 | 6 | Q | | 3 | 3 | ||||||||||||||||||||
| LL | | 65 | 2 | ||||||||||||||||||||||||
| First Round | Second Round | Quarter-finals | Semi-finals | ||||||||||||||||||||||||
| 5 | | 64 | 3 | ||||||||||||||||||||||||
| Q |  | 77 | 6 | Q | | 1 | 7 | 6 | |||||||||||||||||||
| | 6 | 6 | | 6 | 5 | 4 | |||||||||||||||||||||
| WC | | 1 | 3 | Q | | 77 | 3 | 0 | |||||||||||||||||||
 | 2 | 6 | 77 | 4 | | 65 | 6 | 6 | |||||||||||||||||||
| Q | | 6 | 3 | 65 | | 3 | 2 | ||||||||||||||||||||
| WC | | 3 | 65 | 4 | | 6 | 6 | ||||||||||||||||||||
| 4 | | 6 | 77 | 4 | | 3 | 4 | ||||||||||||||||||||
| 8 | | 4 | 0 | | 6 | 6 | |||||||||||||||||||||
 | 6 | 6 | | 77 | 3 | 4 | |||||||||||||||||||||
 | 5 | 60 | | 64 | 6 | 6 | |||||||||||||||||||||
| | 7 | 77 | | 7 | 77 | ||||||||||||||||||||||
| | 4 | 1 | | 5 | 65 | ||||||||||||||||||||||
| | 6 | 6 | | 7 | 6 | ||||||||||||||||||||||
 | 6 | 6 | | 5 | 4 | ||||||||||||||||||||||
| 2 | | 2 | 4 | ||||||||||||||||||||||||
Andre Agassi was the defending champion, but lost in the second round to Karol Kučera.
Fabrice Santoro was the defending champion but lost in the first round to Gianluca Pozzi.
The Men’s Singles tournament of the 2002 Qatar Open tennis championship took place in Doha, Qatar, between 31 December 2001 and 6 January 2002. 32 players from 17 countries competed in the 5-round tournament. The final winner was Younes El Aynaoui of Morocco, who defeated Félix Mantilla of Spain. The defending champion from 2001, Marcelo Ríos, did not compete.
Younes El Aynaoui was the defending champion but lost in the semifinals to Stefan Koubek.
Julián Alonso was the defending champion, but lost in the second round this year.
Franco Squillari was the defending champion.
Jiří Novák was the defending champion but lost in the second round to Julien Boutter.
Fernando Vicente was the defending champion but lost in the first round to Mariano Zabaleta.
Guillermo Cañas was the defending champion but lost in the final 3–6, 6–3, 6–2 against Younes El Aynaoui.
Gustavo Kuerten was the defending champion, but Magnus Norman defeated him 6–3, 4–6, 6–4, 6–4 in the final.
Andre Agassi was the defending champion but lost in the first round to David Ferrer.
Pete Sampras was the defending champion, but chose not to participate that year.
Magnus Norman was the defending champion, but the fifth seeded Swede lost in the first round to qualifier Adrian Voinea. Younes El Aynaoui won in the final 6–0, 6–3 against number three seed Mariano Zabaleta and captured the second title of his professional career.
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Juan Balcells was the defending champion but lost in the quarterfinals to Albert Montañés.
Arnaud Clément was the defending champion but lost in the second round to Xavier Malisse.
Juan Carlos Ferrero was the defending champion but lost in the second round to Younes El Aynaoui.
Andrea Gaudenzi was the defending champion but lost in the first round to Gorka Fraile.
Paul Haarhuis was the defending champion but lost in the semifinals to Younes El Aynaoui.
Yevgeny Kafelnikov was the defending champion and won in the final 7–6(7–2), 6–4 against Byron Black.