Kaj Antero Riska (born January 25, 1953, Helsinki, Finland)[citation needed] is a naval architect and engineer with expertise in ice and arctic technology.

[1] Kaj Riska graduated from the Helsinki University of Technology (TTK) (Finnish: Teknillinen korkeakoulu) in Naval Architecture as M.Sc.

[citation needed] He worked at the Technical Research Centre of Finland from 1977 to 1988 as the group leader for Arctic Marine Technology.

[citation needed] Since 2005 he has been a partner of the company ILS Oy and since 2006 Professor at the Norwegian University of Science and Technology (NTNU) in Trondheim, Norway.

[2] Kaj Riska passed his student exam (upper secondary school) at Helsingin Yhtenäiskoulu in May 1972.