| Doubles | |
|---|---|
| 2023 Sibiu Open | |
| Champions |  Andrew Paulson Michael Vrbenský |
| Runners-up |  Piotr Matuszewski  Kai Wehnelt |
| Score | 6–2, 6–2 |
Ivan and Matej Sabanov were the defending champions [1] but chose not to defend their title.
Andrew Paulson and Michael Vrbenský won the title after defeating Piotr Matuszewski and Kai Wehnelt 6–2, 6–2 in the final.
Piotr Matuszewski / Kai Wehnelt (final)
Niki Kaliyanda Poonacha / Divij Sharan (semifinals)
Zvonimir Babić / 
Alexandru Jecan (quarterfinals) Andrew Paulson / Michael Vrbenský (champions)Key
| First round | Quarterfinals | Semifinals | Final | ||||||||||||||||||||||||
| 1 | P Matuszewski Kai Wehnelt | 6 | 6 | ||||||||||||||||||||||||
 M Echargui  C Tabur | 3 | 3 | 1 | P Matuszewski K Wehnelt | 6 | 7 | |||||||||||||||||||||
 A Merino C Negritu | 5 | 1 |  S Travaglia A Weis | 4 | 5 | ||||||||||||||||||||||
| S Travaglia Alexander Weis | 7 | 6 | 1 | P Matuszewski K Wehnelt | 77 | 7 | |||||||||||||||||||||
| 3 | Z Babić A Jecan | 6 | 6 | G Blancaneaux C Hemery | 64 | 5 | |||||||||||||||||||||
| WC | Robert Gabriel Ionescu Marc Popescu | 0 | 2 | 3 | Z Babić A Jecan | 2 | 2 | ||||||||||||||||||||
G Ferrari  V Orlov | 3 | 4 | G Blancaneaux C Hemery | 6 | 6 | ||||||||||||||||||||||
| G Blancaneaux C Hemery | 6 | 6 | 1 | P Matuszewski K Wehnelt | 2 | 2 | |||||||||||||||||||||
| Alt |  Denis Klok Ryuki Matsuda | 6 | 6 | 4 | A Paulson M Vrbenský | 6 | 6 | ||||||||||||||||||||
| R Bonadio G Fonio | 3 | 1 | Alt | D Klok R Matsuda | 2 | 3 | |||||||||||||||||||||
 JP Paz Dan Alexandru Tomescu | 0 | 0 | 4 | A Paulson M Vrbenský | 6 | 6 | |||||||||||||||||||||
| 4 | A Paulson M Vrbenský | 6 | 6 | 4 | A Paulson M Vrbenský | 6 | 6 | ||||||||||||||||||||
| 2 | N Kaliyanda Poonacha D Sharan | 2 | 4 | ||||||||||||||||||||||||
| WC |  B Artnak Dragoș Nicolae Cazacu | 7 | 4 | [8] | |||||||||||||||||||||||
| S Caruso A Giannessi | 2 | N Kaliyanda Poonacha D Sharan | 5 | 6 | [10] | ||||||||||||||||||||||
| 2 | N Kaliyanda Poonacha D Sharan | w/o | |||||||||||||||||||||||||
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