The 2018 Swiss Indoors was a men's tennis tournament played on indoor hard courts. It was the 49th edition of the tournament, and part of the 500 series of the 2018 ATP World Tour. It was held at the St. Jakobshalle in Basel, Switzerland, from 22 October through 28 October 2018. First-seeded Roger Federer won his ninth singles title at the event.
See main article: 2018 Swiss Indoors – Singles.
Marius Copil, 7–6(7–5), 6–4See main article: 2018 Swiss Indoors – Doubles.
Dominic Inglot / Franko Škugor defeated Alexander Zverev / Mischa Zverev, 6–2, 7–5| Event | W | F | SF | QF | Round of 16 | Round of 32 | width=85 | Q | width=85 | Q2 | width=85 | Q1 |
| Singles[1] | 500 | 300 | 180 | 90 | 45 | 0 | 20 | 10 | 0 | |||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubles | 0 | 45 | 25 | 0 |
| Country | Player | Rank1 | Seed | |
|---|---|---|---|---|
| Roger Federer | 3 | 1 | ||
| Alexander Zverev | 5 | 2 | ||
| Marin Čilić | 6 | 3 | ||
| Stefanos Tsitsipas | 16 | 4 | ||
| Jack Sock | 18 | 5 | ||
| Marco Cecchinato | 19 | 6 | ||
 Russian Federation | Daniil Medvedev | 21 | 7 | |
| Roberto Bautista Agut | 25 | 8 |
The following players received wildcards into the singles main draw:
The following player received entry as a special exempt:
The following players received entry from the qualifying draw:
The following player received entry as a lucky loser:
Juan Martín del Potro → replaced by Maximilian Marterer
David Goffin → replaced by 
Ryan Harrison
Dušan Lajović| Country | Player | Country | Player | Rank1 | Seed | |
|---|---|---|---|---|---|---|
| Raven Klaasen |  New Zealand | Michael Venus | 30 | 1 | ||
 Japan | ||||||
| Jean-Julien Rojer | Romania | Horia Tecău | 52 | 3 | ||
 India | Rohan Bopanna |  Spain | Marcel Granollers | 55 | 4 |
The following pairs received wildcards into the doubles main draw:
The following pair received entry from the qualifying draw:
The following pair received entry as lucky losers:
