2023 Koblenz Open

The 2023 Koblenz Open was a professional tennis tournament played on indoor hard courts. It was the fifth edition of the tournament which was part of the 2023 ATP Challenger Tour. It took place in Koblenz, Germany from 30 January to 5 February 2023.

2023 Koblenz Open
Date	30 January – 5 February
Edition	5th
Surface	Hard (indoor)
Location	Koblenz, Germany
Champions
Singles
Roman Safiullin
Doubles
Fabian Fallert / Hendrik Jebens

Singles main-draw entrants

Seeds

Country	Player	Rank1	Seed
CHN	Zhang Zhizhen	96	1
	Roman Safiullin	97	2
CAN	Vasek Pospisil	99	3
GER	Maximilian Marterer	142	4
FRA	Hugo Grenier	147	5
GBR	Liam Broady	158	6
FRA	Alexandre Müller	160	7
NED	Gijs Brouwer	161	8

• ¹ Rankings are as of 16 January 2023.

Other entrants

The following players received wildcards into the singles main draw:

• Max Hans Rehberg
• Henri Squire
• Marko Topo

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

• Raphaël Collignon
• Lucas Gerch
• Robin Haase
• Daniel Masur
• Louis Wessels

The following players received entry from the qualifying draw:

• Johannes Härteis
• Antoine Hoang
• Mats Rosenkranz
• Vitaliy Sachko
• Alexey Vatutin
• Denis Yevseyev

Champions

Singles

Main article: 2023 Koblenz Open – Singles

• Roman Safiullin def. Vasek Pospisil 6–2, 7–5.

Doubles

Main article: 2023 Koblenz Open – Doubles

• Fabian Fallert / Hendrik Jebens def. Jonathan Eysseric / Denys Molchanov 7–6^(7–2), 6–3.