2023 Iași Open – Men's singles

Felipe Meligeni Alves was the defending champion^[1] but chose not to defend his title.

Men's singles
2023 Iași Open
Champion	Hugo Gaston
Runner-up	Bernabé Zapata Miralles
Score	3–6, 6–0, 6–4

Main article: 2023 Iași Open

Hugo Gaston won the title after defeating Bernabé Zapata Miralles 3–6, 6–0, 6–4 in the final.

Seeds

1. Bernabé Zapata Miralles (final)
2. Radu Albot (first round)
3. Tomáš Macháč (first round, retired)
4. Zsombor Piros (first round)
5. Cristian Garín (semifinals)
6. Hugo Gaston (champion)
7. Enzo Couacaud (first round)
8. Zdeněk Kolář (second round)

Draw

Key

• Q = Qualifier
• WC = Wild card
• LL = Lucky loser
• Alt = Alternate
• ITF = ITF entry
• PR = Protected ranking
• SR = Special ranking
• SE = Special exempt
• JE = Junior exempt
• JR = Junior Accelerator Programme entrant
• CO = College Accelerator Programme entrant
• NG = Next Gen Accelerator Program entrant
• w/o = Walkover
• r = Retired
• d = Defaulted

Finals

	Semifinals							Final
	1/WC	Bernabé Zapata Miralles	2	7	6
	5	Cristian Garín	6	5	3
								1/WC	Bernabé Zapata Miralles	6	0	4
								6	Hugo Gaston	3	6	6
	6	Hugo Gaston	6	6
	Alt	Steven Diez	4	4

Top half

	First round							Second round							Quarterfinals							Semifinals
	1/WC	B Zapata Miralles	6	6
		A Dougaz	4	3				1/WC	B Zapata Miralles	6	6
		D Svrčina	77	6					D Svrčina	3	4
	Q	Sebastian Gima	63	2											1/WC	B Zapata Miralles	6	3	6
		J Menšík	7	6												J Menšík	1	6	2
	Q	K Jacquet	5	4					J Menšík	6	6
	Q	Andrey Chepelev	4	6	5			8	Z Kolář	2	2
	8	Z Kolář	6	3	7																	1/WC	B Zapata Miralles	2	7	6
	4	Z Piros	2	6	62																	5	C Garín	6	5	3
		T Atmane	6	3	77				T Atmane	1	5
		Edoardo Lavagno	4	3					R Bonadio	6	7
		R Bonadio	6	6												R Bonadio	4	6	63
	Alt	V Vacherot	77	7											5	C Garín	6	4	77
		J De Loore	64	5				Alt	V Vacherot	62	2
		DN Mădăraș	5	2				5	C Garín	77	6
	5	C Garín	7	6

Bottom half

	First round							Second round							Quarterfinals							Semifinals
	6	H Gaston	4	0
	Alt	M Zekić	6	1r				6	H Gaston	77	6
	PR	P Cuevas	6	6				PR	P Cuevas	65	1
		G Onclin	2	3											6	H Gaston	6	3	6
	LL	M Vrbenský	6	6												V Sachko	0	6	3
	Q	Juan Bautista Otegui	2	3				LL	M Vrbenský	1	2
		V Sachko	65	6	3				V Sachko	6	6
	3	T Macháč	77	4	0r																	6	H Gaston	6	6
	7	E Couacaud	2	1																		Alt	S Diez	4	4
	WC	FC Jianu	6	6				WC	FC Jianu	6	4	3
	Q	K Ivanovski	4	77	6			Q	K Ivanovski	3	6	6
		ND Ionel	6	64	2										Q	K Ivanovski	4	3
	Q	Àlex Martí Pujolràs	1	1											Alt	S Diez	6	6
	Alt	S Diez	6	6				Alt	S Diez	6	6
		JP Ficovich	6	6					JP Ficovich	3	4
	2	R Albot	3	3