Mattias Alkberg, born 8 januari 1969, is a swedish musician, songwriter and poet. He is guitarist and vocalistin the indie rock band The Bear Quartet, that released their first album in 1992, the same year as his first poetry collection, Separerade ägg ("Separated eggs"), was published. His swedish language band Mattias Alkberg BD saw success in 2004 when their first album was released. In 2009 he recorded the solo album Nerverna ("The Nerves").

Alkberg has published four poetry collections on Wahlström & Widstrand. He recieved an award from Svenska Akademien in 2004. Alkberg has also contributed as a chronicler and record reviewer in the newspaper Norrbottens-Kuriren.

Alkberg grew up in Tuna in Luleå but currently lives in Svartöstaden.