Henrik "Henkka" Klingenberg (born 21 October 1978) is a Finnish keyboardist, keytarist and singer. He joined the Finnish power metal band Sonata Arctica in late 2002 and currently resides in Kemi, Finland, when not on tour.
Keyboardists he has listed as his favourites include Kevin Moore, Jon Lord, Jens Johansson and Matt Guillory. He claims that his musical inspiration is taken from life itself.