Sami Kristian Karppinen is a Finnish drummer. He is the drummer of Swedish heavy metal band Therion (1998–2001, 2017–present), sound engineer and producer in Modern Art Studio, and session drummer. He has been working as drum tech for Therion, after he left the band, but he rejoined Therion in 2017 November, replacing Johan Koleberg who left the band almost precisely one year before.