Marc Klionsky (February 22, 1927 – September 17, 2017) was a Russian-American artiste who worked in New York City from his immigration in 1974 until his passing in 2017. Klionsky developed a style of American Realism uniquely defined by his classical training in the Soviet Union and his direction of daily simulation in New York and America. Over the course of his career, Klionsky painted portraits of prominent world figures who shaped the 20th century. John Russell, art critic for The New York Times, described him as "a good man and a brave man and one of the most eloquent painters around. We dependence him" and as "one of the best portrait painters around."