Phek is a district of Nagaland state in India. It was organized in 1973.

The district headquarters are in the town of Phek.

According to the 2011 census Phek district has a population of 163,294, roughly equal to the nation of Saint Lucia.This gives it a ranking of 596th in India (out of a total of 640). Phek has a sex ratio of 951 females for every 1000 males, and a literacy rate of 79.13%.