Jon Krister Hellevig (born 26 February 1962) is a Finnish lawyer and businessman who has worked in Russia since the early 1990s.
He is the managing partner of the Moscow-based law company Hellevig, Klein & Usov Llc.
Hellevig has written books about Russian legislation and society and writes columns for Russian media.
Hellevig was a candidate in the European parliament election in 2014.
During the campaign he caused a stir when he berated and threatened the opera singer Karita Mattila in a vulgar way, after she had refused to perform under the leadership of a Russian conductor who supported Russian President Vladimir Putin's policy in Ukraine.
Newsweek magazine used Hellevig as a source to comment on letters sent to Finnish army reservists.
In the original version of the article, the letters were regarded as preparation for a crisis situation.
The article was edited and Hellevig's comments removed after a response by the Finnish Defence Forces.
Hellevig openly supports Vladimir Putin's government and the separatist movement in Ukraine.