Christoffer Sundqvist was born in Stockholm, moved to Finland at the age of 6 and began his clarinet studies at the Jakobstad Conservatory with Bernhard Nylund. He completed his diploma examination at the Sibelius Academy with Anna-Maija Korsima and continued his studies at the Basel Music Academy with François Benda. Other important teachers include Hans Rudolf Stalder, Guy Deplus and Charles Neidich and a number of distinguished chamber music musicians.
In recent years he has been the soloist with almost all the professional Finnish orchestras. Topping the list of solo engagements with orchestras abroad have been the BBC Symphony Orchestra, the Gothenburg Symphony, the Basel Symphony, the Estonian National Symphony, the Nordwestdeutsche Philharmonic and the Norrköping Symphony Orchestra. Conductors with whom he has collaborated include Jukka-Pekka Saraste, John Storgårds, Sakari Oramo, Okko Kamu and Hannu Lintu.
Sundqvist appears at festival as the Helsinki Festival, Kuhmo Chamber Music Festival, März Musik Berlin, Warsaw Autumn and West Cork Chamber Music Festival and collaborates regularly with Pekka Kuusisto, Hugo Ticciati, Oliver Triendl, Angela Hewitt and Torleif Thedéen.
Christoffer Sundqvist has been Artistic Director of the Rusk Chamber Music Festival together with composer Sebastian Fagerlund since its foundation in 2013.