Kristoffer Joner (born 19 September 1972) is a Norwegian actor.
He was a part of Rogaland Teater when he was 14 years of age until his early 20s.
He was one of the founders of Cementen pub located in Stavanger, Norway.
He is the father of actress Téa Grønner Joner who played his young adult daughter in War Sailor.
Joner's films include Detector, Mongoland, Villmark, Loose Ends, Samaritan, Min Misunnelige Frisør, Kissed by Winter, Naboer, Gymnaslærer Pedersen, The Man Who Loved Yngve, Hidden (Skjult) and War Sailor.