Singles
2018 The Hague Open
Champion	Thiemo de Bakker
Runner-up	Yannick Maden
Score	6–2, 6–1

Guillermo García López was the defending champion but chose not to defend his title.

Thiemo de Bakker won the title after defeating Yannick Maden 6–2, 6–1 in the final.

Seeds

Draw

Finals

	Semifinals							Final
	1	Yannick Maden	6	6
		Lukáš Rosol	3	4
								1	Yannick Maden	2	1
								WC	Thiemo de Bakker	6	6
	Q	Kimmer Coppejans	1	4
	WC	Thiemo de Bakker	6	6

Top half

	First round							Second round							Quarterfinals							Semifinals
	1	Y Maden	77	6
	Q	A Davidovich Fokina	64	1				1	Y Maden	6	6
	WC	T van Rijthoven	3	3				LL	M Netuschil	3	1
	LL	Marvin Netuschil	6	6											1	Y Maden	6	67	6
		L Harris	1	77	3										7	A Balázs	2	79	3
		N Kuhn	6	61	6				N Kuhn	3	4
	WC	J Sels	3	63				7	A Balázs	6	6
	7	A Balázs	6	77																		1	Y Maden	6	6
	3	M Moraing	3	2																			L Rosol	3	4
		B Rola	6	6					B Rola	6	6
		B Zapata Miralles	7	6					B Zapata Miralles	4	4
	Q	E Benchetrit	5	1												B Rola	4	78	4
		L Rosol	6	6												L Rosol	6	66	6
		V Šafránek	3	2					L Rosol	4	77	6
		T Kamke	6	3	77				T Kamke	6	64	4
	LL	Jeremy Jahn	4	6	65

Bottom half

	First round							Second round							Quarterfinals							Semifinals
	5	M Donati	4	3
		A Hoang	6	6					A Hoang	3	2
		S Griekspoor	6	4	3			Q	K Coppejans	6	6
	Q	K Coppejans	2	6	6										Q	K Coppejans	7	6
	WC	B van de Zandschulp	7	6											4	O Otte	5	4
		J Choinski	5	2				WC	B van de Zandschulp	61	4
		G Oliveira	65	2				4	O Otte	77	6
	4	O Otte	77	6																		Q	K Coppejans	1	4
	8	G Barrère	5	5																		WC	T de Bakker	6	6
		D Brown	7	7					D Brown	6	2	3
		A Giannessi	3	6	6				A Giannessi	4	6	6
		T-h Yang	6	1	3											A Giannessi	6	67	4
	Q	G Brouwer	3	0											WC	T de Bakker	3	79	6
		U Ignatik	6	6					U Ignatik	4	64
	WC	T de Bakker	66	77	6			WC	T de Bakker	6	77
	2	A Pavlásek	78	63	3

References

• Main Draw
• Qualifying Draw