2023 Schwaben Open

Country	Player	Rank1	Seed
ARG	Hernán Casanova	242	1
LIB	Benjamin Hassan	244	2
ARG	Román Andrés Burruchaga	254	3
CAN	Steven Diez	255	4
FRA	Manuel Guinard	259	5
ARG	Santiago Rodríguez Taverna	269	6
GER	Timo Stodder	274	7
ESP	Nikolás Sánchez Izquierdo	279	8

• ¹ Rankings are as of 14 August 2023.^[1]

The following players received wildcards into the singles main draw:

• Marvin Möller
• Max Hans Rehberg
• Marko Topo

The following players received entry from the qualifying draw:

• Gianmarco Ferrari
• Hady Habib
• Daniel Masur
• Christoph Negritu
• David Pichler
• Nicolas Zanellato

The following player received entry as a lucky loser:

• Henrique Rocha

• Carlos Taberner def. Oriol Roca Batalla 6–4, 6–4.

• Constantin Frantzen / Hendrik Jebens def. Constantin Bittoun Kouzmine / Volodymyr Uzhylovskyi 6–2, 6–2.