| 2018 Winnipeg National Bank Challenger | |
|---|---|
| Date | July 10–15 |
| Edition | 3rd (men) 6th (women) |
| Category | ATP Challenger Tour ITF Women's Circuit |
| Surface | Hard – outdoors |
| Location | Winnipeg, Manitoba, Canada |
| Venue | Winnipeg Lawn Tennis Club |
| Champions | |
| Men's singles | |
 Jason Kubler | |
| Women's singles | |
 Rebecca Marino | |
| Men's doubles | |
 Marc-Andrea Hüsler /  Sem Verbeek | |
| Women's doubles | |
 Akiko Omae /  Victoria Rodríguez | |
The 2018 Winnipeg National Bank Challenger was a professional tennis tournament played on outdoor hard courts. It was the 3rd edition, for men, and 6th edition, for women, of the tournament and part of the 2018 ATP Challenger Tour and the 2018 ITF Women's Circuit. It took place in Winnipeg, Manitoba, Canada between July 10 and July 15, 2018.