John Koch (August 18, 1909 – April 19, 1978) was an American painter, and an important figure in 20th century realist painting.
His early work may be considered Impressionist.
He is best known for his light-filled realist paintings of urban interiors, often featuring classical allusions, and set in his own Manhattan apartment.
As visible in The Sculptor (1964, oil on canvas, 80" x 59 7/8", Brooklyn Museum), much of Koch's work is made up of portraits and social scenes, including cocktail parties and scenes with the artist at work with his models.
He was a mentor of the painter Charles Pfahl (b.
1946).
In 1953 he was elected into the National Academy of Design as an associate member and became a full academician in 1954.