Archicebus is a genus of fossil primates that lived in the early Eocene forests (~55 million years ago) of what is now Jingzhou in the Hubei Province in central China, discovered in 2003. The only species, A. achilles, was a small primate, estimated to weigh approximately 20–30 grams (0.71–1.06 oz), and is the only known member of the family Archicebidae.