Jarmo Koski is an actor of 73 ( 2 juillet 1951). Jarmo Koski has appeared in 1 show and 1 movie. A performance to be found in the role of Seppo Taalasmaa in the series Salatut Elämät. In the cinema, in the role of Hemuli (voice) in the feature film Muumi ja punainen pyrstötähti.