Singles
2003 Qatar Open
Final
Champion	Stefan Koubek
Runner-up	Jan-Michael Gambill
Score	6–4, 6–4
Details
Draw	32
Seeds	8
Events
Singles Doubles
← 2002 · ATP Qatar Open · 2004 →

Younes El Aynaoui was the defending champion but lost in the semifinals to Stefan Koubek.

Koubek won in the final 6–4, 6–4 against Jan-Michael Gambill.

	Semifinals							Final
	9	Jan-Michael Gambill	6	6
	6	Mikhail Youzhny	4	2
								9	Jan-Michael Gambill	4	4
									Stefan Koubek	6	6
	3	Younes El Aynaoui	61	65
		Stefan Koubek	77	77

	First round							Second round							Quarterfinals							Semifinals
	1	R Federer	6	64	6
	LL	A Stoliarov	2	77	4			1	R Federer	6	6
		M Kratochvil	6	6					M Kratochvil	4	4
	WC	S Khalfan	0	4											1	R Federer	4	5
		R Sluiter	3	77	4										9	J-M Gambill	6	7
		D Ferrer	6	62	6				D Ferrer	65	4
		I Heuberger	1	5				9	J-M Gambill	77	6
	9	J-M Gambill	6	7																		9	J-M Gambill	6	6
	4	Y Kafelnikov	2	5																		6	M Youzhny	4	2
		F Vicente	6	7					F Vicente	7	77
	Q	M Hantschk	77	6				Q	M Hantschk	5	63
		K Carlsen	63	1												F Vicente	67	3
		R Štěpánek	64	6	6										6	M Youzhny	79	6
		F López	77	3	2				R Štěpánek	3	1
		D Sánchez	6	4	4			6	M Youzhny	6	6
	6	M Youzhny	4	6	6

	First round							Second round							Quarterfinals							Semifinals
	8	F Santoro	6	6
		F Mantilla	3	3				8	F Santoro	7	68	7
	WC	Y Allegro	3	2				Q	C Rochus	5	710	5
	Q	C Rochus	6	6											8	F Santoro	6	3	3
		H Arazi	6	6											3	Y El Aynaoui	3	6	6
	Q	D Prinosil	2	3					H Arazi	4	61
		J Boutter	4	4				3	Y El Aynaoui	6	77
	3	Y El Aynaoui	6	6																		3	Y El Aynaoui	61	65
	7	N Escudé	65	2																			S Koubek	77	77
		S Koubek	77	6					S Koubek	6	6
		V Voltchkov	6	3	7				V Voltchkov	1	1
		H-T Lee	4	6	5											S Koubek	6	6
	Q	A Vinciguerra	2	6	6										Q	A Vinciguerra	3	4
	WC	K Alami	6	4	1			Q	A Vinciguerra	3	77	7
		A Gaudenzi	3	4				2	A Costa	6	65	5
	2	A Costa	6	6

• 2003 Qatar Open draw
• 2003 Qatar Open Qualifying draw