Singles
2006 Croatia Open Umag
Final
Champions	Stan Wawrinka
Runners-up	Novak Djokovic
Score	6–6 (1–3) Ret.
Details
Draw	32 (4 Q / 3 WC )
Seeds	8
Events
Singles Doubles
← 2005 · Croatia Open Umag · 2007 →

Stan Wawrinka won his first ATP title, after Novak Djokovic retired in the final while leading 3–1 in the first-set tiebreak.^[1]

Guillermo Coria was the defending champion, but lost in the first round to Robin Vik.

	Semifinals							Final
	5	Carlos Moyá	1	5
	4	Novak Djokovic	6	7
								4	Novak Djokovic	63r
									Stan Wawrinka	61
		Stan Wawrinka	7	2	6
	8	Filippo Volandri	5	6	4

	First round							Second round							Quarterfinals							Semifinals
	LL	S Galvani	2	2
		C Berlocq	6	6					C Berlocq	6	3	2
	Q	JP Guzmán	4	6	6			Q	JP Guzmán	3	6	6
		G García-López	6	3	4										Q	JP Guzmán	1	4
		A di Mauro	5	65											5	C Moyá	6	6
		S Greul	7	77					S Greul	2	1
		J Novák	4	78	63			5	C Moyá	6	6
	5	C Moyá	6	66	77																	5	C Moyá	1	5
	4	N Djokovic	6	6																		4	N Djokovic	6	7
	WC	L Belić	3	3				4	N Djokovic	6	6
	Q	S Ianni	66					Q	S Ianni	3	4
		T Gabashvili	64r												4	N Djokovic	6	3	7
		J Vaněk	7	6												J Vaněk	1	6	5
	Q	S Ventura	5	4					J Vaněk	77	6
		L Dlouhý	2	6	6				L Dlouhý	64	4
	7	J Benneteau	6	3	2

	First round							Second round							Quarterfinals							Semifinals
	6	A Martín	63	4
		S Wawrinka	77	6					S Wawrinka	6	2	6
		E Korolev	77	4	3			WC	M Čilić	4	6	4
	WC	M Čilić	65	6	6											S Wawrinka	6	2	6
	WC	JM del Potro	6	6											WC	JM del Potro	1	6	4
		R Sluiter	3	2				WC	JM del Potro	2	6	6
		R Vik	6	6					R Vik	6	4	3
	3	G Coria	2	3																			S Wawrinka	7	2	6
	8	F Volandri	6	0																		8	F Volandri	5	6	4
		M Gicquel	1	0r				8	F Volandri	4	77	77
		R Ramírez Hidalgo	5	6	6				R Ramírez Hidalgo	6	64	65
		F Vicente	7	0	1										8	F Volandri	77	6
	Q	F Cipolla	2	1												A Portas	64	4
		J Hernych	6	6					J Hernych	7	4	2
		A Portas	77	65	7				A Portas	5	6	6
	2	JC Ferrero	64	77	5

• Main draw
• Qualifying draw