| Date: | 19–25 June |
| Edition: | 30th |
| Draw: | 32S / 16D |
| Surface: | Grass |
| Prize Money: | €2,195,175 |
| Category: | ATP Tour 500 |
| Location: | Halle, Germany |
| Venue: | OWL Arena |
| Champs: |  Alexander Bublik[1] |
| Champd: |  Marcelo Melo /  John Peers[2] |
The 2023 Halle Open (known for sponsorship reasons as the Terra Wortmann Open) was a men's tennis tournament played on outdoor grass courts. It was the 30th edition of the Halle Open and part of the ATP Tour 500 series of the 2023 ATP Tour. It took place at the OWL Arena in Halle, Germany, between 19 June and 25 June 2023. Unseeded Alexander Bublik won the singles title.[3]
See main article: 2023 Halle Open – Singles.
Alexander Bublik def. Andrey Rublev, 6–3, 3–6, 6–3See main article: 2023 Halle Open – Doubles.
Marcelo Melo / John Peers def. 
Simone Bolelli / Andrea Vavassori, 7–6(7–3), 3–6, [10–6]| Event | W | F | SF | QF | Round of 16 | Round of 32 | width=85 | Q | width=85 | Q2 | width=85 | Q1 |
| Singles[4] | 500 | 300 | 180 | 90 | 45 | 0 | 20 | 10 | 0 | |||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubles | 45 | 25 | 0 |
| Event | W | F | SF | QF | Round of 16 | Round of 32 | width=85 | Q2 | width=85 | Q1 |
| Singles | €477,795 | €220,800 | €117,715 | €60,145 | €32,105 | €17,120 | €8,775 | €4,925 | ||
| Doubles* | €134,840 | €71,910 | €36,380 | €18,190 | €9,420 | € |
| Country | Player | Rank1 | Seed | |
|---|---|---|---|---|
| Daniil Medvedev | 3 | 1 | ||
| Stefanos Tsitsipas | 5 | 2 | ||
| Andrey Rublev | 7 | 3 | ||
| Italy | Jannik Sinner | 9 | 4 | |
 Canada | ||||
 Poland | Hubert Hurkacz | 14 | 6 | |
| Borna Ćorić | 15 | 7 | ||
 Spain | Roberto Bautista Agut | 22 | 8 | |
| Alexander Zverev | 23 | 9 |
The following players received wildcards into the main draw:
The following player received entry using a protected ranking:
The following players received entry from the qualifying draw:
The following player received entry as lucky losers:
Félix Auger-Aliassime[7] → replaced by Andrea Vavassori Pablo Carreño Busta → replaced by 
Laslo Djere Roberto Carballés Baena Nick Kyrgios[8] → replaced by Aslan Karatsev
Casper Ruud → replaced by 
Wu Yibing| Country | Player | Country | Player | Rank1 | Seed | |
|---|---|---|---|---|---|---|
| Marcelo Arévalo | Jean-Julien Rojer | 26 | 1 | |||
| Spain | Marcel Granollers |  Argentina | Horacio Zeballos | 41 | 2 | |
 Belgium | Sander Gillé | Belgium | Joran Vliegen | 51 | 3 | |
| Kevin Krawietz | Tim Pütz | 52 | 4 |
The following pairs received wildcards into the doubles main draw:
The following pair received entry from the qualifying draw:
Máximo González / Andrés Molteni → replaced by Simone Bolelli / Andrea Vavassori
