2023 Poznań Open

Country	Player	Rank1	Seed
	Alexander Shevchenko	92	1
ARG	Federico Coria	93	2
CZE	Tomáš Macháč	110	3
ARG	Facundo Díaz Acosta	115	4
CHI	Tomás Barrios Vera	161	5
FRA	Geoffrey Blancaneaux	166	6
BIH	Damir Džumhur	167	7
CZE	Dalibor Svrčina	192	8

• ¹ Rankings are as of 12 June 2023.^[1]

The following players received wildcards into the singles main draw:

• Dali Blanch
• Leo Borg
• Maks Kaśnikowski

The following players received entry into the singles main draw as alternates:

• Max Houkes
• Timo Stodder

The following players received entry from the qualifying draw:

• Ulises Blanch
• Manuel Guinard
• David Jordà Sanchis
• Jérôme Kym
• Rudolf Molleker
• Neil Oberleitner

The following player received entry as a lucky loser:

• Carlos Taberner

• Mariano Navone def. Tomás Barrios Vera 7–5, 6–3.

• Karol Drzewiecki / Petr Nouza def. Ariel Behar / Adam Pavlásek 7–6^(7–2), 7–6^(7–2).