Turtle River Township is a township located in the northeastern-most corner of Grand Forks County, North Dakota, United States. The population was 163 at the 2020 census. The township borders Minnesota to its east.
It was named after the river that flows through it.
Turtle River Township has a total area of , of which is land and is water.
As of the 2023 American Community Survey, there were an estimated 50 households.