3554 Amun is an Aten asteroid, meaning it crosses Earth's orbit, and a Venus-crosser.

It was discovered on 4 March 1986 by Carolyn and Eugene Shoemaker at Mount Palomar Observatory, and named for the ancient Egyptian deity Amun.

The featureless optical spectrum has a similar slope to the Tagish Lake meteorite, although 3554 Amun is not considered the source.

[citation needed] Amun was once considered metallic, based on an M-type optical spectrum.

In Mining the Sky, planetary scientist John S. Lewis calculated the purported value of a metallic 3554 Amun at $20 trillion.