Cedar Fork Township (also designated Township 5) is one of twenty townships within Wake County, North Carolina. As of the 2000 census, Cedar Fork Township had a population of 10,911, a 309.6% increase over 1990, and a population density of 0.37 people per acre (91/km²).

Cedar Fork Township, occupying 29,376 acres (119 km²) in northwestern Wake County, includes the entirely of the town of Morrisville, portions of Cary, Raleigh, and the Research Triangle Park, as well as the Raleigh-Durham International Airport.