North Dakota Highway 68 (ND 68) is a 28.124-mile-long (45.261 km) east–west state highway in the U.S. state of North Dakota. ND 68's western terminus is a continuation as Montana Highway 23 (MT 23) at the Montana border, and the eastern terminus is at U.S. Route 85 (US 85) south of Alexander.

The entire route is in McKenzie County.

Location	mi	km	Destinations	Notes
​	0.000	0.000	MT 23	Continuation into Montana
​	11.441	18.413	ND 16 south	Northern terminus of ND 16
​	28.124	45.261	US 85	Eastern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi