| 2023 Calgary National Bank Challenger | |
|---|---|
| Date | 6–12 November 2023 |
| Edition | 4th (men) 2nd (women) |
| Category | ATP Challenger Tour ITF Women's World Tennis Tour |
| Surface | Hard / Indoor |
| Location | Calgary, Canada |
| Champions | |
| Men's singles | |
 Liam Draxl | |
| Women's singles | |
 Sabine Lisicki | |
| Men's doubles | |
| Juan Carlos Aguilar / Justin Boulais | |
| Women's doubles | |
 Sarah Beth Grey / Eden Silva | |
The 2023 Calgary National Bank Challenger was a professional tennis tournament played on indoor hard courts. It was the fourth edition of the tournament which was part of the 2023 ATP Challenger Tour and the second edition of the tournament which was part of the 2023 ITF Women's World Tennis Tour. It took place in Calgary, Canada between 6 and 12 November 2023.