Wallowa may refer to the Wallowa band of the Nez Perce or to various geographical entities in the northeastern part of the U.S. state of Oregon named after them:
- Wallowa County, Oregon
- The city of Wallowa, Oregon
- The Wallowa River
- The Wallowa Mountains
- Wallowa Lake
- Wallowa Lake State Park
- Wallowa–Whitman National Forest
It may also refer to the common name of the following plant species:
- Acacia calamifolia
- Acacia euthycarpa