What name is given to creatures other thn ants that have many eyes?

Many creatures that are hardly related to each other have more than two eyes. Examples include many kinds of leeches, some kinds of clams, most kinds kinds of arthropods such as Spiders, and certainly most kinds of insects.

In particular, insects, trilobites, horseshoe crabs, and many crustaceans such as crabs and mantis shrimps, have (or, when they still were alive, had) clustered eyes.

There is no one name for all those creatures, but the clustered eyes are called compound eyes, and the little eyes that are clustered into compound eyes are called ommatidia. A single eye in a compound eye is called an ommatidium.