| Date: | 23–29 July |
| Edition: | 37th (men) 12th (women) |
| Category: | ATP Challenger Tour ITF Women's Circuit |
| Location: | Tampere, Finland |
| Surface: | Clay |
| Champms: | Tallon Griekspoor |
| Champmd: |  Markus Eriksson / André Göransson |
| Champws: |  Francesca Jones |
| Champwd: | Camila Giangreco Campiz /  Bojana Marinković |
The 2018 Tampere Open was a professional tennis tournament played on clay courts. It was the 37th edition of the tournament which was part of the 2018 ATP Challenger Tour and the 2018 ITF Women's Circuit. It took place in Tampere, Finland, on 23–29 July 2018.
| Country | Player | Rank1 | Seed | |
|---|---|---|---|---|
 Bolivia, Plurination;al State of | Hugo Dellien | 106 | 1 | |
| Pedro Sousa | 136 | 2 | ||
 Argentina | Juan Ignacio Londero | 137 | 3 | |
| Argentina | Marco Trungelliti | 188 | 4 | |
 Poland | Kamil Majchrzak | 196 | 5 | |
| Tallon Griekspoor | 222 | 6 | ||
 France | Antoine Hoang | 223 | 7 | |
| France | Gleb Sakharov | 235 | 8 |
The following players received wildcards into the singles main draw:
The following player received entry into the singles main draw using a protected ranking:
The following player received entry into the singles main draw as a special exempt:
The following players received entry from the qualifying draw:
| Country | Player | Rank1 | Seed | |
|---|---|---|---|---|
| United Kingdom | Francesca Jones | 537 | 1 | |
| Serbia | Bojana Marinković | 603 | 2 | |
| Camila Giangreco Campiz | 619 | 3 | ||
| Sweden | Marina Yudanov | 659 | 4 | |
 Russian Federation | Polina Bakhmutkina | 752 | 5 | |
| Russian Federation | Angelina Zhuravleva | 799 | 6 | |
| Argentina | Paula Barañano | 927 | 7 | |
 Australia | Angelique Svinos | 965 | 8 |
The following players received wildcards into the singles main draw:
Ella Haavisto Oona Orpana
Katriin Saar Liisa VehviläinenThe following players received entry from the qualifying draw:
Alisa Axyanova
Anda Ghinga Emilia Hartman Svetlana Iansitova
Ana Lantigua de la Nuez Mariella Minetti Maileen NuudiSee main article: 2018 Tampere Open – Men's singles.
Juan Ignacio Londero 6–3, 2–6, 6–3. Francesca Jones def. Bojana Marinković, 6–2, 7–6(7–2)See main article: 2018 Tampere Open – Men's doubles.
Markus Eriksson / André Göransson def. Ivan Gakhov / Alexander Pavlioutchenkov 6–3, 3–6, [10–7]. Bojana Marinković def. Polina Bakhmutkina / Elena Malõgina, 1–6, 6–4, [10–7]
