2018 Tilia Slovenia Open – Doubles

Hans Podlipnik Castillo and Andrei Vasilevski were the defending champions but chose not to defend their title.

Gerard Granollers and Lukáš Rosol won the title after defeating Nikola Ćaćić and Lucas Miedler 7–5, 6–3 in the final.

	First round							Quarterfinals							Semifinals							Final
	1	R Gonzales N Lammons	7	6
		A Çelikbilek C İlkel	5	3				1	R Gonzales N Lammons	3	5
		B Saraiva S Verbeek	3	2					N Ćaćić L Miedler	6	7
		N Ćaćić L Miedler	6	6												N Ćaćić L Miedler	3	6	[10]
	3	A Begemann A Olivetti	7	6											3	A Begemann A Olivetti	6	3	[4]
		M Eriksson A Göransson	5	4				3	A Begemann A Olivetti	4	6	[10]
	WC	Aljaž Jakob Kaplja Robert Kjellberg	1	4					D Propoggia S Puodziunas	6	2	[4]
		D Propoggia S Puodziunas	6	6																			N Ćaćić L Miedler	5	3
		I Nedelko A Šetkić	4	4																			G Granollers L Rosol	7	6
		B Bonzi M Vervoort	6	6					B Bonzi M Vervoort	5	4
	WC	T Kočevar-Dešman N Razboršek	3	4				4	T Khabibulin S Stakhovsky	7	6
	4	T Khabibulin S Stakhovsky	6	6											4	T Khabibulin S Stakhovsky	1	1
		T Draganja N Serdarušić	77	4	[12]											G Granollers L Rosol	6	6
	WC	T Lipovšek Puches A Radinski	64	6	[10]				T Draganja N Serdarušić	4	4
		G Granollers L Rosol	5	6	[10]				G Granollers L Rosol	6	6
	2	F Agamenone LD Martínez	7	2	[4]

• Main draw