Konstantin Simun (6 April 1934 – 4 September 2019)[1] was a Russian sculptor living and working in Boston, United States.

Simun created numerous works which were widely exhibited throughout Russia and the United States.

He was the creator of the 1966 monument "Broken Ring" on Lake Ladoga (near St. Petersburg, Russia), which brought him international recognition, and is acknowledged as one of the most significant memorials of World War II.

His work "Totem: America" was exhibited at the DeCordova Museum and Sculpture Park in Lincoln, Massachusetts, from 1993 to 2002, and brought him great popularity in the US.

He was the creator of the memorial to puppeteer I. Fokin installed in Harvard Square, Cambridge, Massachusetts in 2001.