Singles
2019 Croatia Open Umag
Final
Champion	Dušan Lajović
Runner-up	Attila Balázs
Score	7–5, 7–5
Details
Draw	28 (4 Q / 3 WC )
Seeds	8
Events
Singles Doubles
← 2018 · Croatia Open Umag · 2021 →

Marco Cecchinato was the defending champion, but lost in the first round to Aljaž Bedene.

Dušan Lajović won his first ATP Tour singles title, defeating Attila Balázs in the final, 7–5, 7–5.

The top four seeds receive a bye into the second round.

	Semifinals							Final
	Q	Attila Balázs	6	6
	3	Laslo Đere	2	4
								Q	Attila Balázs	5	5
								4	Dušan Lajović	7	7
	4	Dušan Lajović	7	0
	Q	Salvatore Caruso	5	0r

	First round							Second round							Quarterfinals							Semifinals
								1	F Fognini	1	1r
		S Travaglia	6	6					S Travaglia	6	2
		T Fabbiano	3	2												S Travaglia	6	62	3
	Q	A Balázs	6	65	77										Q	A Balázs	3	77	6
	WC	V Galović	0	77	64			Q	A Balázs	6	61	77
		T Daniel	5	64				6	F Krajinović	3	77	65
	6	F Krajinović	7	77																		Q	A Balázs	6	6
																						3	L Đere	2	4
								3	L Đere	6	3	6
	Q	P Torebko	7	4	63				P Lorenzi	3	6	4
		P Lorenzi	5	6	77										3	L Đere	6	66	6
	PR	C-M Stebe	65	6	62										8	L Mayer	4	78	3
		J Veselý	77	3	77				J Veselý	6	4	4
		P Andújar	1	5				8	L Mayer	3	6	6
	8	L Mayer	6	7

	First round							Second round							Quarterfinals							Semifinals
	5	M Cecchinato	3	2
		A Bedene	6	6					A Bedene	77	6
		P Sousa	6	3	4			WC	J Sinner	63	3
	WC	J Sinner	1	6	6											A Bedene	7	3	3
		A Rublev	6	6											4	D Lajović	5	6	6
		R Haase	3	2					A Rublev	4	3
								4	D Lajović	6	6
																						4	D Lajović	7	0
	7	M Kližan	6	3	5																	Q	S Caruso	5	0r
		F Bagnis	4	6	7				F Bagnis	6	6
	Q	M Trungelliti	3	3				WC	N Serdarušić	3	3
	WC	N Serdarušić	6	6												F Bagnis	4	0
		C Moutet	5	0											Q	S Caruso	6	6
	Q	S Caruso	7	6				Q	S Caruso	6	3	6
								2	B Ćorić	2	6	1

	First round							Qualifying competition
	1	Salvatore Caruso	6	6
	Alt	Nik Razboršek	3	2
								1	Salvatore Caruso	5	6	6
								5	Tommy Robredo	7	4	3
	Alt	Miljan Zekić	2	3
	5	Tommy Robredo	6	6

	First round							Qualifying competition
	2	Rudolf Molleker	63	7	6
		Fabrizio Ornago	77	5	2
								2	Rudolf Molleker	2	4
								8	Attila Balázs	6	6
	WC	Admir Kalender	0	3
	8	Attila Balázs	6	6

	First round							Qualifying competition
	3	Filippo Baldi	64	3
		Peter Torebko	77	6
									Peter Torebko	6	7
								WC	Daniel Altmaier	3	5
	WC	Daniel Altmaier	6	6
	7	Carlos Berlocq	2	4

	First round							Qualifying competition
	4	Marco Trungelliti	7	7
		Alexander Zhurbin	5	5
								4	Marco Trungelliti	64	6	6
								6	Stefano Napolitano	77	2	3
		Javier Barranco Cosano	61	6	2
	6	Stefano Napolitano	77	3	6

• Main draw
• Qualifying draw