| Date: | 16–22 July |
| Edition: | 71st |
| Surface: | Clay |
| Venue: | Båstad Tennis Stadium |
| Champs: |  Fabio Fognini |
| Champd: | Julio Peralta /  Horacio Zeballos |
The 2018 Swedish Open (also known as the SkiStar Swedish Open for sponsorship reasons) was a tennis tournament played on outdoor clay courts as part of the ATP World Tour 250 Series of the 2018 ATP World Tour. It took place in Båstad, Sweden, from 15 through 22 July 2018. The women's tournament was discontinued this year and replaced by the Moscow River Cup.
| Country | Player | Rank1 | Seed | |
|---|---|---|---|---|
| Argentina | Diego Schwartzman | 11 | 1 | |
 Spain | Pablo Carreño Busta | 12 | 2 | |
| Italy | Fabio Fognini | 16 | 3 | |
 France | Richard Gasquet | 31 | 4 | |
| Spain | Fernando Verdasco | 34 | 5 | |
| Argentina | Leonardo Mayer | 36 | 6 | |
| Spain | David Ferrer | 37 | 7 | |
 Australia | John Millman | 56 | 8 |
The following players received wildcards into the singles main draw:
The following players received entry from the qualifying draw:
The following player received entry as a lucky loser:
Nicolás Kicker → replaced by 
Thiago Monteiro
Viktor Troicki → replaced by Henri Laaksonen Lorenzo Sonego
Gerald Melzer| Country | Player | Country | Player | Rank1 | Seed | |
|---|---|---|---|---|---|---|
 Belarus | Max Mirnyi | Austria | Philipp Oswald | 73 | 1 | |
| Julio Peralta | Argentina | Horacio Zeballos | 78 | 2 | ||
 New Zealand | Marcus Daniell | Wesley Koolhof | 88 | 3 | ||
| Spain | David Marrero |  Pakistan | Aisam-ul-Haq Qureshi | 90 | 4 |
The following pairs received wildcards into the doubles main draw:
See main article: 2018 Swedish Open – Singles.
Fabio Fognini def. Richard Gasquet, 6–3, 3–6, 6–1See main article: 2018 Swedish Open – Doubles.
Horacio Zeballos def. Simone Bolelli / Fabio Fognini, 6–3, 6–4
