| Date: | 30 July – 5 August |
| Edition: | 74th |
| Category: | World Tour 250 series |
| Surface: | Clay / outdoor |
| Location: | Kitzbühel, Austria |
| Venue: | Tennis stadium Kitzbühel |
| Champs: |  Martin Kližan |
| Champd: |  Roman Jebavý /  Andrés Molteni |
The 2018 Generali Open Kitzbühel was a men's tennis tournament played on outdoor clay courts. It was the 74th edition of the Austrian Open Kitzbühel, and part of the World Tour 250 series of the 2018 ATP World Tour. It took place at the Tennis stadium Kitzbühel in Kitzbühel, Austria, from July 30 through August 5.[1]
| Country | Player | Rank1 | Seed | |
|---|---|---|---|---|
 Austria | Dominic Thiem | 8 | 1 | |
| Philipp Kohlschreiber | 25 | 2 | ||
 Spain | Fernando Verdasco | 33 | 3 | |
| Robin Haase | 38 | 4 | ||
 France | Gilles Simon | 39 | 5 | |
| Maximilian Marterer | 47 | 6 | ||
| Jan-Lennard Struff | 51 | 7 | ||
 Serbia | Dušan Lajović | 63 | 8 |
The following players received wildcards into the singles main draw:
The following players received entry into the singles main draw as special exempts:
The following players received entry from the qualifying draw:
Radu Albot Richard Gasquet → replaced by 
Taro Daniel Gaël Monfils → replaced by Jaume Munar Guido Pella → replaced by 
Nikoloz Basilashvili Albert Ramos Viñolas → replaced by 
Mikhail Kukushkin Laslo Đere| Country | Player | Country | Player | Rank1 | Seed | |
|---|---|---|---|---|---|---|
| Julio Peralta | Argentina | Horacio Zeballos | 75 | 1 | ||
 Belarus | Max Mirnyi | Austria | Philipp Oswald | 84 | 2 | |
 New Zealand | Marcus Daniell | Wesley Koolhof | 89 | 3 | ||
| Tim Pütz | Jan-Lennard Struff | 102 | 4 |
The following pairs received wildcards into the doubles main draw:
See main article: 2018 Generali Open Kitzbühel – Singles.
Martin Kližan defeated 
Denis Istomin, 6–2, 6–2See main article: 2018 Generali Open Kitzbühel – Doubles.
Roman Jebavý / Andrés Molteni defeated 
Daniele Bracciali / Federico Delbonis, 6–2, 6–4