The order Primates has traditionally been divided into two main groupings: prosimians and anthropoids (simians).

By modern cladistic reckoning, order Primates is monophyletic.

This is a list of species of the order Primates described in the 2010s.

A primate is any member of the biologic order Primates.

However, the placement of the aye-aye within the order Primates remained problematic until very recently.

It has been noted that if this were applied to animal classification, the order Primates would be a single species.

The aye-aye's classification with the order Primates has been just as uncertain.

The following is the listing of the various simian families, and their placement in the order Primates:

Scientists are interested in these animals because of their unique taxonomic position in the order Primates.

In 1863, Thomas Henry Huxley restored the order Primates to include humans, other apes, monkeys, lemurs, and even colugos.