North Carolina Highway 136 (NC 136) is a 2.22-mile (3.57 km) North Carolina state highway that runs entirely within Currituck County. It is a short spur of US 158, connecting the U.S. Highway to the small unincorporated community of Poplar Branch. The route's eastern terminus is at a boat launch on the Currituck Sound. Prior to 2002, NC 136's current alignment was NC 3. The two routes swapped designations in 2002 to put NC 3 near the home of Dale Earnhardt, a deceased NASCAR driver from Kannapolis that drove the #3 car.

NC 136 begins at an intersection with US 158, heading east on two-lane undivided Macedonia Church Road. The road heads through wooded areas with some farm fields and homes. The highway turns north onto Poplar Branch Road and heads through the residential community of Poplar Branch, curving to the northeast. NC 136 runs through more woodland with some homes before coming to a dead end at a boat launch on the Currituck Sound.

The current NC 136 was originally NC 3. In 2002, NC 3 swapped designations with the original NC 136, which ran between Kannapolis and Mooresville. This was done in order for that road to honor Dale Earnhardt, a NASCAR driver from Kannapolis that drove the #3 car who was killed in the 2001 Daytona 500.

The entire route is in Poplar Branch, Currituck County.