Singles
2018 Sibiu Open
Champion	Dragoș Dima
Runner-up	Jelle Sels
Score	6–3, 6–2

Cedrik-Marcel Stebe was the defending champion but chose not to defend his title.

Dragoș Dima won the title after defeating Jelle Sels 6–3, 6–2 in the final.

Seeds

Draw

Finals

	Semifinals							Final
	1	Laslo Đere	1r
	Q	Jelle Sels	0
								Q	Jelle Sels	3	2
								WC	Dragoș Dima	6	6
	7	Pedro Martínez	4	2
	WC	Dragoș Dima	6	6

Top half

	First round							Second round							Quarterfinals							Semifinals
	1	L Đere	79	7
		D Kuzmanov	67	5				1	L Đere	4	6	6
	Alt	A Šetkić	5	2					K Krawietz	6	2	2
		K Krawietz	7	6											1	L Đere	3	6	6
		M Viola	2	77	1										8	L Rosol	6	4	0
		N Serdarušić	6	60	6				N Serdarušić	1r
		G Oliveira	66	3				8	L Rosol	2
	8	L Rosol	78	6																		1	L Đere	1r
	4	S Bolelli	6	6																		Q	J Sels	0
	Q	Jeremy Jahn	4	4				4	S Bolelli	62	3
	Q	J Sels	77	6				Q	J Sels	77	6
		C Gómez-Herrera	64	3											Q	J Sels	3	6	6
	WC	Michał Dembek	5	3											LL	J Barranco Cosano	6	2	4
		Z Kolář	7	6					Z Kolář	4	4
	LL	J Barranco Cosano	77	0				LL	J Barranco Cosano	6	6
	6	G Quinzi	63	0r

Bottom half

	First round							Second round							Quarterfinals							Semifinals
	7	P Martínez	77	0
	Q	N Frunză	65	0r				7	P Martínez	6	6
	Q	Fabrizio Ornago	3	6	77			Q	F Ornago	4	4
	WC	A Ungur	6	3	62										7	P Martínez	6	62	6
		F Horanský	6	5	4										3	P Sousa	4	77	2
		K Coppejans	2	7	6				K Coppejans	2	4
		S Nagal	2	4				3	P Sousa	6	6
	3	P Sousa	6	6																		7	P Martínez	4	2
	5	M Polmans	7	2	6																	WC	D Dima	6	6
		S Ofner	5	6	3			5	M Polmans	3	4
		K Majchrzak	3						K Majchrzak	6	6
		G Mager	0r													K Majchrzak	6	65	3
	WC	VV Cornea	3	6	0										WC	D Dima	0	77	6
		J Domingues	6	3	6				J Domingues	6	67	4
	WC	D Dima	6	6				WC	D Dima	3	79	6
	2	D Novak	2	1

References

• Main Draw
• Qualifying Draw