Janne Tolsa (born 7 March 1970) is a Finnish heavy metal musician. Known for his keyboard work in Tarot from the late 1980s, Tolsa also takes part in the melodic death metal band Eternal Tears of Sorrow, which he joined in 2005 for their album Before the Bleeding Sun, as well as the industrial metal band Turmion Kätilöt (under the alias RunQ). Tolsa is also known to work as a composer for television. Janne Tolsa plays keyboards in Marenne Band and is one of the composers in the band's debut album The Past Prelude.
His main keyboards are a KORG Triton Extreme and a KORG CX-3, but he also uses Ensoniq and Proteus keyboards and a Hammond B-100.
In addition, he is the owner of the Kuopio-based studio, Note On Studio. Turmion Kätilöt, Tarot and Eternal Tears of Sorrow have been partly or completely recorded many of their albums.