Kanuty Rusiecki, or Kanutas Ruseckas (10 February 1800, Stebėkiai, near Vadokliai, Lithuania - 21 August 1860, Vilnius) was a Polish-Lithuanian painter.

He was born into an impoverished noble family and his father was a magistrate. He is said to have displayed his artistic talent at an early age, making impromptu models in wax. In 1816, he began his studies at the University of Vilnius. Initially, he studied law and mathematics, but eventually followed his true interests and, in 1818, switched to the study of art, under the tutelage of Jan Rustem and Kazimierz Jelski. During his stay at the University, he was a member of the Philomaths, a secret society of Polish students.

With letters of recommendation and his father's financial support (and following a secret marriage), he went to Paris and enrolled at the École nationale supérieure des Beaux-Arts from 1821 to 1822, studying with Guillaume Guillon-Lethière. He then spent a year at the Accademia di San Luca in Rome, where he worked with Vincenzo Camuccini and attended the sculpture workhop of Bertel Thorvaldsen.[1] He also served as the informal leader of the Polish-Lithuanian art community there and presented an exhibition of Polish Romantic painters. Between studies, he toured extensively, painting portraits and landscapes throughout Italy.

Beginning in 1831, he gave private drawing lessons in Vilnius. Three years later, he became a Professor at the "Vilniaus bajorų institute" (institute for the nobility) and taught there until his death. In 1856, he joined with Wincenty Dmochowski and Kazimierz Jelski in an effort to create an independent art school. He painted altar pictures and restored frescoes in many small churches throughout Lithuania, as well as at the Vilnius Cathedral.

Most of his canvases were in private collections that have been dispersed and are now difficult to trace. Although fairly numerous, all but a few of his known paintings are those that were left in his studio at the time of his death. They were preserved by his son Bolesław (1824-1913), who was also a painter, and later bequeathed to various museums in Poland, Lithuania and what is now Belarus.