The slime molds; organisms having a noncellular and multinucleate creeping vegetative phase and a propagative spore-producing stage: comprises Myxomycetes and Acrasiomycetes and Plasmodiophoromycetes; in some classifications placed in the kingdom Protoctista.

Myxomycota is a phylum of the Kingdom Amoebozoa related to protists. The name comes from the Greek Myxo, meaning "slime", and mycota=fungus. They are also known as the plasmodial slime molds.