Doubles
2019 Croatia Open Umag
Final
Champions	Robin Haase Philipp Oswald
Runners-up	Oliver Marach Jürgen Melzer
Score	7–5, 6–7(2–7), [14–12]
Events
Singles Doubles
← 2018 · Croatia Open Umag · 2021 →

Robin Haase and Matwé Middelkoop were the defending champions, but Middelkoop chose to compete in Båstad instead.

Haase played alongside Philipp Oswald and successfully defended the title, defeating Oliver Marach and Jürgen Melzer in the final, 7–5, 6–7^(2–7), [14–12].

	First round							Quarterfinals							Semifinals							Final
	1	O Marach J Melzer	6	77
		P Sousa S Travaglia	2	62				1	O Marach J Melzer	6	6
		A Behar N Lammons	7	2	[9]				N Čačić D Lajović	2	3
		N Čačić D Lajović	5	6	[11]										1	O Marach J Melzer	77	7
	4	L Mayer A Molteni	6	6											4	L Mayer A Molteni	65	5
		F Neis C-M Stebe	4	1				4	L Mayer A Molteni	7	7
		H Podlipnik Castillo T-S Weissborn	2	2				WC	T Brkić A Pavić	5	5
	WC	T Brkić A Pavić	6	6																		1	O Marach J Melzer	5	77	[12]
	Alt	D Altmaier R Molleker	5	3																		2	R Haase P Oswald	7	62	[14]
	WC	A Šančić N Serdarušić	7	6				WC	A Šančić N Serdarušić	3	6	[2]
		P Andújar G Granollers	2	2				3	D Molchanov I Zelenay	6	4	[10]
	3	D Molchanov I Zelenay	6	6											3	D Molchanov I Zelenay	5	6	[8]
		T Fabbiano P Lorenzi	77	1	[8]										2	R Haase P Oswald	7	1	[10]
		S Bolelli F Fognini	65	6	[10]				S Bolelli F Fognini
		A Rublev A Vasilevski	6	5	[14]			2	R Haase P Oswald	w/o
	2	R Haase P Oswald	4	7	[16]

• Main Draw