Stefon Alexander, better known by his stage name P.O.S, is an underground hip hop artist from Minneapolis, Minnesota.

He is a founding member of the indie hip hop collective Doomtree and is currently signed to Rhymesayers Entertainment. He has also fronted a number of punk rock bands and is currently serving as guitarist and vocalist for Building Better Bombs, as well as vocalist and keyboardist for Marijuana Deathsquads.