Konstantin Simun (6 April 1934 – 4 September 2019) was a Russian sculptor living and working in Boston, United States. He was born in Saint Petersburg, Russia in 1934. He is most well known for his large-scale monuments, including "Broken Ring", a monument to the "Road of Life" on Lake Ladoga, near Saint Petersburg, and "Totem America," exhibited for a decade at DeCordova Museum and Sculpture Park. He was a recipient of awards from the International Dyagilev Prize "For Devotion to Art", the Ludwig Vogelstein Foundation, and the Pollack-Krasner Foundation.