Singles
2018 Istanbul Open
Final
Champion	Taro Daniel
Runner-up	Malek Jaziri
Score	7–6(7–4), 6–4
Details
Draw	28 (4 Q / 3 WC )
Seeds	8
Events
Singles Doubles
← 2017 · Istanbul Open

Marin Čilić was the defending champion, but lost in the second round to Malek Jaziri.

Taro Daniel won his first ATP World Tour title, defeating Jaziri in the final, 7–6^(7–4), 6–4.

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

	Semifinals							Final
		Malek Jaziri	6	6
		Laslo Đere	3	2
									Malek Jaziri	64	4
									Taro Daniel	77	6
		Taro Daniel	6	4	6
		Jérémy Chardy	3	6	4

	First round							Second round							Quarterfinals							Semifinals
								1	M Čilić	4	2
		M Jaziri	6	6					M Jaziri	6	6
	WC	M İlhan	1	2												M Jaziri	3	6	6
	Q	T Monteiro	6	3	6										7	J Veselý	6	4	1
		G Melzer	2	6	1			Q	T Monteiro	2	6	63
	Q	D Gimeno Traver	3	1				7	J Veselý	6	2	77
	7	J Veselý	6	6																			M Jaziri	6	6
																							L Đere	3	2
								3	A Seppi	3	77	3
		L Đere	77	78					L Đere	6	64	6
		D Istomin	65	66												L Đere	65	7	77
	Q	M Trungelliti	4	6	6										5	P Lorenzi	77	5	63
	Q	E Ymer	6	3	2			Q	M Trungelliti	2	65
	WC	C İlkel	2	3				5	P Lorenzi	6	77
	5	P Lorenzi	6	6

	First round							Second round							Quarterfinals							Semifinals
	6	V Troicki	3	6	7
	WC	B Tomic	6	0	5			6	V Troicki	2	3
		R Albot	4	4					R Dutra Silva	6	6
		R Dutra Silva	6	6												R Dutra Silva	6	1	4
		T Daniel	7	6												T Daniel	1	6	6
		M Berrettini	5	3					T Daniel	6	6
								4	A Bedene	2	2
																							T Daniel	6	4	6
	8	N Basilashvili	5	3																			J Chardy	3	6	4
		J Chardy	7	6					J Chardy	4	77	6
		J Millman	4	0					D Lajović	6	63	2
		D Lajović	6	6												J Chardy	6	6
		T Fabbiano	6	6												T Fabbiano	2	2
		M Youzhny	1	1					T Fabbiano	6	0	6
								2	D Džumhur	2	6	2

	First round							Qualifying competition
	1	Ramkumar Ramanathan	6	6
		Aldin Šetkić	4	3
								1	Ramkumar Ramanathan	4	3
									Marco Trungelliti	6	6
		Marco Trungelliti	6	6
	5	Sebastian Ofner	3	2

	First round							Qualifying competition
	2	Ilya Ivashka	62	2
		Daniel Gimeno Traver	77	6
									Daniel Gimeno Traver	77	6
								8	Stefano Napolitano	65	3
		Tobias Kamke	2	4
	8	Stefano Napolitano	6	6

	First round							Qualifying competition
	3	Thiago Monteiro	6	6
	WC	Mert Alkaya	3	1
								3	Thiago Monteiro	6	77
									Tommy Robredo	3	65
		Tommy Robredo	6	6
	6	Viktor Galović	3	4

	First round							Qualifying competition
	4	Elias Ymer	78	6
		Václav Šafránek	66	1
								4	Elias Ymer	64	6	7
								7	Hubert Hurkacz	77	4	5
	WC	Sarp Ağabigün	2	3
	7	Hubert Hurkacz	6	6

• Main Draw
• Qualifying Draw