There are many more then three tributaries and sub-tributaries to the Mississippi River but some of them include:
- The Minnesota River.
- The St. Croix River.
- The Wisconsin River.
- The Rock River.
- The Iowa River.
- The Skunk River.
- The Des Moines River.
- The Illinois River.
- The Missouri River which includes the Platte as a sub-tributary.
- The Ohio River which includes the Tennessee River as a sub-tributary.
- The Arkansas River.
- The Yazoo River.