Carl Christian Oluf Jensen (1871-1934), painter, printmaker, and ceramist, was born in Copenhagen, Denmark on February 17, 1871. He graduated from technical school in 1890 and then studied at the Royal Danish Academy until 1985. That same year he apprenticed at Royal Copenhagen as a "blue-painter", learning the technique for applying the famed, cobalt blue pigment in delicate, often repeating floral patterns to fine china. He worked for the company until 1934, painting and designing porcelain and eventually managing the underglaze departments. Jensen also worked at Holmegaard Glassworks in 1924. 

Jensen is best known for his decorative painting on ceramic but he was also highly regarded painter in oil and watercolor. He also produced etchings both in black and white and in color, the latter of which often featured florals that echoed his beginnings in the porcelain world. His etchings are often signed Oluf Jensen.

Today Jensen is considered, along with Arnold Krog, one of the artists who had the greatest impact on the development the Danish underglaze porcelain. Examples of his decorated porcelain are in the Nationalmuseum, Stockholm. Carl Christian Oluf Jensen died in Copenhagen on January 31, 1934.