U. Ray and Sons was a privately held blockmaking, printing and publishing firm in Calcutta, India founded by Upendrakishore Ray in 1895. At its inception the firm was named U. Ray after its owner; and Sons was added in 1900 when his son Sukumar Ray joined the firm. It was notable for internationally pioneering work in halftone process work. The firm became bankrupt in 1926, but the business was revived under a new owner in 1929. The Successor of this printing press is Ayan Banerjee.

Upendrakishore Ray Chowdhury was a Bengali writer, painter and entrepreneur. One of his written books is Chotoder Shera Bigyan Rochona Shongkolon. He was the son-in-law of reformer Dwarkanath Ganguly. He was also an entrepreneur. He was the first person who introduced color printing in Bengal. He started the first colour children's magazine Sandesh in 1913.